By Topic

Broadcasting, IEEE Transactions on

Issue 4 • Date Dec. 2010

Filter Results

Displaying Results 1 - 25 of 25
  • Table of contents

    Page(s): C1
    Save to Project icon | Request Permissions | PDF file iconPDF (36 KB)  
    Freely Available from IEEE
  • IEEE Transactions on Broadcasting publication information

    Page(s): C2
    Save to Project icon | Request Permissions | PDF file iconPDF (42 KB)  
    Freely Available from IEEE
  • 2010 Scott Helt Memorial Award for the Best Paper Published in the IEEE Transactions on Broadcasting

    Page(s): 437 - 438
    Save to Project icon | Request Permissions | PDF file iconPDF (462 KB)  
    Freely Available from IEEE
  • Letter of appreciation

    Page(s): 439 - 440
    Save to Project icon | Request Permissions | PDF file iconPDF (30 KB)  
    Freely Available from IEEE
  • RF Performance of DTV Converter Boxes—An Overview of FCC Measurements

    Page(s): 441 - 451
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1165 KB) |  | HTML iconHTML  

    The Federal Communications Commission (FCC) Laboratory conducted radio-frequency (RF) performance measurements and functionality tests on manufacturer-supplied samples of 136 digital television (DTV) converter box models on behalf of the National Telecommunications and Information Administration (NTIA). The tests served as one step in the NTIA's approval process for converter boxes to be eligible for dollar40 government coupons provided by the U.S. Congress in support of the DTV transition. We present statistics of RF performance measurements for 116 converter box models that were approved by the NTIA. Results are presented as 10th, 50th, and 90th percentile values across the set of converter boxes that were tested and approved. The RF performance measurements include: sensitivity; susceptibility to phase noise and burst noise; susceptibility to interference from single DTV signals on adjacent and taboo channels and from pairs of DTV signals on channels spaced to place third-order intermodulation products in the tuned channel; single-static-echo performance; ability to demodulate the ATSC field ensembles; and RF pass-through gain and noise. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of Primaries for a Wide-Gamut Television Colorimetry

    Page(s): 452 - 457
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1126 KB) |  | HTML iconHTML  

    We discuss the requirements of system colorimetry for a wide-gamut television system and propose a set of wavelengths as monochromatic RGB primaries. We show that a display with three monochromatic primaries (R: 635 nm, G: 532 nm, B: 467 nm) generated by feasible laser devices can cover the gamuts defined by ITU-R Rec. 709, SMPTE RP 431-2, and Adobe RGB. We also prove that most real object colors in Pointer's gamut and the SOCS database are covered with the proposed primaries. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Assessing Quality of Experience of IPTV and Video on Demand Services in Real-Life Environments

    Page(s): 458 - 466
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (847 KB) |  | HTML iconHTML  

    The ever growing bandwidth in access networks, in combination with IPTV and video on demand (VoD) offerings, opens up unlimited possibilities to the users. The operators can no longer compete solely on the number of channels or content and increasingly make high definition channels and quality of experience (QoE) a service differentiator. Currently, the most reliable way of assessing and measuring QoE is conducting subjective experiments, where human observers evaluate a series of short video sequences, using one of the international standardized subjective quality assessment methodologies. Unfortunately, since these subjective experiments need to be conducted in controlled environments and pose limitations on the sequences and overall experiment duration they cannot be used for real-life QoE assessment of IPTV and VoD services. In this article, we propose a novel subjective quality assessment methodology based on full-length movies. Our methodology enables audiovisual quality assessment in the same environments and under the same conditions users typically watch television. Using our new methodology we conducted subjective experiments and compared the outcome with the results from a subjective test conducted using a standardized method. Our findings indicate significant differences in terms of impairment visibility and tolerance and highlight the importance of real-life QoE assessment. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Efficient Motion Vector Recovery Algorithm for H.264 Using B-Spline Approximation

    Page(s): 467 - 480
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1876 KB) |  | HTML iconHTML  

    The H.264 encoded video is highly sensitive to loss of motion vectors during transmission. Several statistical techniques are proposed for recovering such lost motion vectors. These use only the motion vectors that belong to the macroblocks that are horizontally or vertically adjacent to the lost macroblock, to recover the latter. Intuitively this is one of the main reasons behind why these techniques yield inferior solutions in scenarios where there is a non-linear motion. This paper proposes B-Spline based statistical techniques that comprehensively address the motion vector recovery problem in the presence of different types of motions that include slow, fast/sudden, continuous and non-linear movements. Testing the proposed algorithms with different benchmark video sequences shows an average improvement of up to 2 dB in the Peak Signal to Noise Ratio of some of the recovered videos, over existing techniques. A 2 dB improvement in PSNR is very significant from an application point of view. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Error-Resilient Scheme for Wavelet Video Codec Using Automatic ROI Detection and Wyner-Ziv Coding Over Packet Erasure Channel

    Page(s): 481 - 493
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1772 KB) |  | HTML iconHTML  

    The error-resilient for video transmission over the Internet in which regarded as the packet erasure channel is always a tough task and has gained lots of attentions. The main contradictory problem lies between error-resilient and bandwidth usage. Additional redundant data has to be added to achieve robust transmission which leads to huge bandwidth usage. In this paper, an error-resilient scheme called Wyner-Ziv Error-Resilient (WZER) based on a receiver driven layered Wyner-Ziv (WZ) coding framework is proposed. The WZER purposely emphasizes on the protection of the Region of Interest (ROI) area in the frame thus to achieve the better tradeoff between the bandwidth usage and error-resilience. WZER is designed to work for the scenario of wavelet based video coding over packet erasure channel, where several techniques including automatic ROI detection, ROI mask generation, Rate distortion optimization (RDO) quantization, WZ coding with layer design, and packet level Low Density Parity Check (LDPC) code are used. The performances of the proposed WZER are simulated based on average PSNR of luminance, perceptual reconstruction and bandwidth usage and compared with normal Forward Error Correction (FEC) full protection scheme and no protection scheme. The results show the advantages of the proposed WZER over traditional FEC protection, especially in the aspects of the recovery of the subject area and bandwidth efficiency. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • MIMO Beamforming for QoS Enhancement via Analog, Digital and Hybrid Relaying

    Page(s): 494 - 503
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (655 KB) |  | HTML iconHTML  

    Quality-of-service (QoS) of multimedia broadcast/multicast service (MBMS) is the most challenging issue that needs to be addressed for next generation wireless broadcasting. Multiple-input/multiple-output (MIMO) and multihop relay technologies are viable options for improving QoS of MBMS. For stable MBMS, the average throughput of overall cell region must be guaranteed. Nevertheless, severe throughput degradation may occur in the outer region of multicells due to significant interference from neighboring cells or relay stations, thereby limiting the overall performance. This paper describes an effective technique, which combines MIMO and two-hop relay, to guarantee the QoS of edge users. We assume that the channel between the base station (BS) and the fixed relay station (FRS) is line-of-sight (LOS). First, we define a criterion needed to install the FRS. Second, we construct a weight matrix for hybrid relaying having lower complexity than digital relaying. Finally, we propose a user scheduling algorithm which can be adapted to analog relaying (amplify and forward), digital relaying (decode and forward) and hybrid relaying (filter, amplify and forward). The simulation results show that the proposed method can improve both the QoS of edge users and the sum-rate. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Embedded Transmission of Multi-Service Over DTMB System

    Page(s): 504 - 513
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1429 KB) |  | HTML iconHTML  

    To efficiently support the transmission of terrestrial and mobile services within the same spectrum over the Digital Television Terrestrial Multimedia Broadcasting (DTMB) system, a flexible multi-service datacasting scheme in a backward compatible manner is proposed. Using this scheme, the conventional DTMB receivers work as usual by simply selecting the specific terrestrial DTV programs on the basis of the package identifier (PID) checking, while only the desired mobile service data are processed by the mobile receivers via the designed control signals. Both theoretical analysis and computer simulation show that, at acceptable spectral efficiency penalty, the proposed method not only supports the embedded transmission of multi-services with no reception performance degradation for the traditional terrestrial broadcasting service, but also flexibly provides much better mobile reception performance. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pilot-Aided Joint CFO and Doubly-Selective Channel Estimation for OFDM Transmissions

    Page(s): 514 - 522
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1018 KB) |  | HTML iconHTML  

    This paper studies the problem of pilot-aided joint carrier frequency offset (CFO) and channel estimation using Fisher and Bayesian approaches in orthogonal frequency division multiplexing (OFDM) transmissions over time- and frequency-selective (doubly selective) channels. In particular, the recursive-least-squares (RLS) and maximum-likelihood (ML) techniques are used to facilitate the Fisher estimation implementations. For the Bayesian estimation, the maximum-a-posteriori (MAP) principle is employed in formulating the joint estimation problem. With known channel statistics, the MAP-based estimation is expected to provide better performance than the RLS- and ML-based ones. To avoid a possible identifiability issue in the joint estimation problem, various basis expansion models (BEMs) are deployed as fitting parametric models for capturing the time-variation of the channels. Numerical results and related Bayesian Cramér Rao bounds (BCRB) demonstrate that the deployment of BEMs is able to alleviate performance degradation in the considered estimation techniques using the conventional block-fading assumption over time-varying channels. Among the considered schemes, the MAP-based estimation using the discrete prolate spheroidal (DPS) or Karhuen Loève (KL) basis functions would be the best choice that can provide mean-squared-error (MSE) performance comparable to BCRB in low signal-to-noise ratio (SNR) conditions (e.g., coded OFDM transmissions). View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Field Measurements of a Hybrid DVB-SH Single Frequency Network With an Inclined Satellite Orbit

    Page(s): 523 - 531
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1216 KB) |  | HTML iconHTML  

    Field measurements of a DVB-SH network with both satellite and terrestrial transmitters are presented. The system is a Single Frequency Network transmitting video streams to vehicular terminals with up to 4 branches of receiver antenna diversity. The signal is transmitted in the S-band at 2.1859 GHz with both time and frequency synchronization of the terrestrial repeaters with the satellite's signal. The time and frequency variations are cancelled out at the satellite gateway, but because these can not be canceled at all locations, and because the satellite's position in space is variable (in an inclined orbit) the terrestrial repeaters are made to cancel the residual time and frequency variation. The field measurements include data taken in late 2008 through 2009 with multiple repeaters located in several cities including Las Vegas, NV, Raleigh and Durham, NC, as well as various morphologies, and with elevation angles to the satellite ranging from 25° to 52° . This paper presents coverage data for these various morphologies, modulation and code rates, as well as various MPE-iFEC interleaver settings used to ameliorate the effects of long shadowed intervals such as when the vehicle goes under highways or bridges where there signal is obscured for several seconds. We observed excellent performance in hybrid mode with better than 99% of the measured seconds error free. In satellite-only mode, the MPE-iFEC interleaver raised the performance from 81% to 91% averaged over all environments, including dense urban. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Providing Local Content in a Hybrid Single Frequency Network Using Hierarchical Modulation

    Page(s): 532 - 540
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (473 KB) |  | HTML iconHTML  

    A hierarchical modulation method is proposed for providing local content in a hybrid satellite and terrestrial single frequency network such DVB-SH. The hierarchical modulation is used to transmit both global and local content in terrestrial transmitters. The global content is transmitted with high priority layer of the hierarchical modulation, and the local content is modulated with the low priority layer of the hierarchical modulation. The satellite transmits global content only. The performance of the hierarchical system for both global and local content is analyzed. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Green Network Planning of Single Frequency Networks

    Page(s): 541 - 550
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1399 KB) |  | HTML iconHTML  

    This paper investigates the network deployment of single frequency networks (SFN) based on OFDM schemes that are standardized for terrestrial broadcasting systems, for digital audio broadcasting (DAB) and for digital video broadcasting (DVB) systems. The concept of green network planning is presented. The term `green' refers to low carbon, energy efficiency and low exposure to radiation, parameters important for the sustainable growth. For the purpose of our investigation a mountainous area of Northern Greece is examined, that is described by a digital terrain elevation model (DTEM) and field computations are based on multi shape slope uniform theory of diffraction (UTD) technique. A genetic algorithm (GA) optimization method is developed for the network planning purposes. A comparison between various planning strategies is presented. It is shown that great CO2 reductions, cost savings and low exposure to radiation can be achieved when the network planning considers a `green' strategy. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Iterative Frequency Domain Equalization and Carrier Synchronization for Multi-Resolution Constellations

    Page(s): 551 - 557
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (598 KB) |  | HTML iconHTML  

    Broadband broadcast and multicast wireless systems usually employ OFDM modulations (Orthogonal Frequency Division Multiplexing) combined with non-uniform hierarchical constellations. However, these schemes are very prone to nonlinear distortion effects and have high carrier synchronization requirements. SC-FDE (Single-Carrier with Frequency-Domain Equalization) is an attractive alternative for OFDM, especially when an efficient power amplification is intended. In this paper we consider the use of SC-FDE schemes combined with non-uniform hierarchical constellations in broadband broadcast and multicast wireless systems. We study the impact of residual CFO (Carrier Frequency Offset) on the performance of multi-resolution schemes and we propose iterative frequency domain receivers with joint detection and carrier synchronization to cope with residual CFO estimation errors (a coarse CFO estimation and compensation is assumed before the equalization procedure). Our results show that while a very high carrier synchronization accuracy is required for the least protected bits, the most protected bits are relatively robust to the CFO. By employing the proposed receiver we increase significantly the robustness to residual CFO estimation errors. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Accurate Pilot-Aided Sampling Frequency Offset Estimation Scheme for DRM Broadcasting Systems

    Page(s): 558 - 563
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (216 KB) |  | HTML iconHTML  

    In this paper, we propose an improved sampling frequency offset (SFO) estimation scheme for orthogonal frequency division multiplexing (OFDM) based digital radio mondiale (DRM) broadcasting systems. To demonstrate the performance of the proposed frequency estimator, analytical expression of the mean square error (MSE) is derived and performances are compared with conventional pilot-assisted estimators. Based on the simulation and theoretical analysis, our proposed estimator shows an improved estimation performance compared to the conventional estimators. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pilot Subset Partitioning Based Integer Frequency Offset Estimation for OFDM Systems With Cyclic Delay Diversity

    Page(s): 564 - 569
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (213 KB) |  | HTML iconHTML  

    Cyclic delay diversity (CDD) is a simple transmit diversity technique for coded OFDM systems with multiple transmit antennas. However, high frequency selectivity caused by CDD degrades the performance of post- FFT estimation, i.e., integer frequency offset (IFO). This paper suggests a simple way of improving the performance of the IFO estimator based on the pilot subset partitioning which is designed to reduce the effect of frequency selective fading by adopting the CDD. By partitioning uncorrelated pilot subcarriers into subsets to satisfy high correlation, and performing frequency estimation for each pilot subset, a robust IFO estimation scheme is derived. The simulation results show that the proposed method can provide benefit to the overall system performance . View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Channel Equalization With Phase Error Mitigation for the Chinese Digital Television Terrestrial Broadcasting Systems

    Page(s): 570 - 576
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (220 KB) |  | HTML iconHTML  

    OFDM is extensively used in modern digital television terrestrial broadcasting (DTTB) systems to support high performance bandwidth-efficient multimedia services, such as the Digital Video Broadcasting for Terrestrial Television (DVB-T) proposed as the European DTTB standard and the Digital Television/Terrestrial Multimedia Broadcasting (DTMB) proposed as the Chinese DTTB standard. System based on OFDM is sensitive to the phase error produced due to not only the tuner phase noise but also the phase deviation of residual sampling clock offset, frequency offset estimation error and Doppler spread in the mobile applications. In this paper, a channel equalization with phase error mitigation scheme is proposed for the time domain synchronous OFDM (TDS-OFDM) based Chinese digital television terrestrial broadcasting systems. In the proposed channel equalization scheme, the influence of the phase error on the performance of the TDS-OFDM based Chinese DTTB systems is split into a multiplicative part (which is common to all sub-carriers and is referred to as the common phase rotation (CPR)) and an additive part (which is referred to as the inter-carrier interference (ICI)). Both the CPE and the ICI are estimated and compensated in the proposed scheme. Simulation results for system with phase error and under mobile environment are presented to illustrate the effectiveness of the proposed scheme. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Combining of Cyclically Delayed Signals: A Low-Complexity Scheme for PAPR Reduction in OFDM Systems

    Page(s): 577 - 583
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (264 KB) |  | HTML iconHTML  

    Based on superposition of signals in the time domain, we propose a new low-complexity scheme for the reduction of the peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme first generates signal candidates by combining an OFDM signal and its cyclically delayed versions with different delays and phases, and then selects the candidate signal with minimum PAPR. It is shown that the complexity of the proposed scheme is significantly lower than that of the selective mapping (SLM) at the cost of some degradation in the bit error rate (BER) performance and, at similar PAPR and coded BER performance, is lower than that of the low-complexity SLM proposed recently. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Special Issue JDT Display Technologies for Consumer Electronics

    Page(s): 584
    Save to Project icon | Request Permissions | PDF file iconPDF (163 KB)  
    Freely Available from IEEE
  • 60th Annual IEEE Broadcasting Symposium

    Page(s): 585
    Save to Project icon | Request Permissions | PDF file iconPDF (1301 KB)  
    Freely Available from IEEE
  • 61st Annual IEEE Broadcast Symposium

    Page(s): 586
    Save to Project icon | Request Permissions | PDF file iconPDF (792 KB)  
    Freely Available from IEEE
  • 2010 Index IEEE Transactions on Broadcasting Vol. 56

    Page(s): 587 - 596
    Save to Project icon | Request Permissions | PDF file iconPDF (99 KB)  
    Freely Available from IEEE
  • IEEE Transactions on Broadcasting information for authors

    Page(s): C4 - C3
    Save to Project icon | Request Permissions | PDF file iconPDF (39 KB)  
    Freely Available from IEEE

Aims & Scope

IEEE Transactions on Broadcasting covers the field of broadcast technology, including the production, distribution, transmission, and propagation aspects of broadcasting.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Yiyan Wu
Communications Research Ctr Canada