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Broadcasting, IEEE Transactions on

Issue 3 • Date Sept. 2011

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Displaying Results 1 - 23 of 23
  • Table of contents

    Publication Year: 2011 , Page(s): C1
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    Freely Available from IEEE
  • IEEE Transactions on Broadcasting publication information

    Publication Year: 2011 , Page(s): C2
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  • Time Diversity in Mobile DVB-T2 Systems

    Publication Year: 2011 , Page(s): 617 - 628
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1609 KB) |  | HTML iconHTML  

    DVB-T2 implements a very flexible time interleaving that allows multiple tradeoffs in terms of time diversity, latency and power saving. In this paper, we study in detail these tradeoffs in the context of mobile reception. Together with time diversity, we also investigate the impact of reduced time de-interleaving memory and Alamouti-based MISO in the mobile reception of DVB-T2 services. In addition, we propose the utilization of upper layer FEC protection in order to overcome the limitations of the DVB-T2 physical layer for the provision of long time interleaving, and enable fast zapping. The performance is evaluated by means of simulations in mobile channels that include the presence of fast fading and shadowing in the received signal. View full abstract»

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  • An Audio Quality Evaluation of Commercial Digital Radio Systems

    Publication Year: 2011 , Page(s): 629 - 635
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1065 KB) |  | HTML iconHTML  

    In this paper, the subjective audio quality of various digital radio systems is evaluated. In order to estimate the true audio quality of a commercial digital radio service, test audio signals were acquired directly from the digital radio equipment in the field. Twenty-one subjects participated in the test after pre-screening. The evaluation process consisted of two phases. In the first phase, the audio quality of each system was evaluated as a function of the bit rates, and the relationship between the audio quality and the channel capacity of each system was obtained. In order to confirm the evaluation consistency, in the second phase, the audio quality as a function of the systems was evaluated. Assuming that the digital radio equipment tested in this paper is used for service, these evaluation results provide the true audio quality of commercial digital radio services for various types of systems and bit rates, and can be used as a reference to determine the optimal channel capacity of digital radio service for a given target audio quality. View full abstract»

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  • Spectral Geometry Image: Image Based 3D Models for Digital Broadcasting Applications

    Publication Year: 2011 , Page(s): 636 - 645
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2132 KB) |  | HTML iconHTML  

    The use of 3D models for progressive transmission and broadcasting applications is an interesting challenge due to the nature and complexity of such content. In this paper, a new image format for the representation of 3D progressive model is proposed. The powerful spectral analysis is combined with the state of art Geometry Image(GI) to encode static 3D models into spectral geometry images(SGI) for robust 3D shape representation. Based on the 3D model's surface characteristics, SGI separated the geometrical image into low and high frequency layers to achieve effective Level of Details(LOD) modeling. For SGI, the connectivity data of the model is implicitly encoded in the image, thus removing the need for additional channel bits allocated for its protection during transmission. We demonstrated that by coupling SGI together with an efficient channel allocation scheme, an image based method for 3D representation suitable for adoption in conventional broadcasting standard is proposed. The proposed framework is effective in ensuring the smooth degradation of progressive 3D models across varying channel bandwidths and packet loss conditions. View full abstract»

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  • LIVE: An Integrated Production and Feedback System for Intelligent and Interactive TV Broadcasting

    Publication Year: 2011 , Page(s): 646 - 661
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1932 KB) |  | HTML iconHTML  

    In this paper, we report recent research activities under the integrated project, Live Staging of Media Events (LIVE), which is funded under European Framework-6 Programme, and illustrate how a new LIVE TV broadcasting and content production concept can be introduced to improve the existing TV broadcasting services. In comparison with existing TV content production technologies, we show case that LIVE TV broadcasting format could achieve a range of significant advantages, which can be highlighted as: (i) real-time interaction between TV content production team and viewers to ensure the best possible entertainment experiences and to allow viewers not only to view but also to participate, to influence and to control; (ii) the traditional concept of TV content director can be changed to a TV content conductor, where live TV broadcasting can be conducted on real-time bases and existing content materials can be conducted into multi-streams of TV broadcasting, providing variety of choices to allow the audience to make their own preferences in watching TV programs; (iii) introduction of significant intelligence in terms of content analysis and behavior analysis etc. to further improve the quality of services based on the fundamental concept of LIVE project. When tested under field trials for 2008 Olympic Games by ORF, the developed LIVE system has illustrated great potential as well as significant promises to improve the TV broadcasting services not only in terms of the interaction formats, but also in terms of viewing experiences as well as the style of content productions and preparations. View full abstract»

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  • MS^{2} : A New Real-Time Multi-Source Mobile-Streaming Architecture

    Publication Year: 2011 , Page(s): 662 - 673
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1116 KB) |  | HTML iconHTML  

    Video streaming to mobile users is gaining a tremendous momentum within the communities of both industrial and academic researchers. While the networking technologies continue to evolve, video streaming applications are still prone to constrained bandwidth and also to highly varying network dynamics. This paper addresses these issues and attempts to provide a unique solution by proposing a new multi-source streaming strategy specifically tailored for next generation mobile networks for delivering multimedia services to mobile users. The proposed strategy is dubbed MS2, Multi-Source Mobile Streaming, which comprises a set of mechanisms that aim at ensuring seamless, continuous, and smooth playback of video for roaming users, guaranteeing an efficient and fair utilization of network resources while meeting the playback and buffer constraints of the clients, preventing redundant transmissions and minimizing packet reordering. Through various computer simulations, the performance of MS2 is then validated. The simulation results are encouraging and exhibit the effectiveness of the adopted MS2 architecture. View full abstract»

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  • An Automatic Recommendation Scheme of TV Program Contents for (IP)TV Personalization

    Publication Year: 2011 , Page(s): 674 - 684
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1704 KB) |  | HTML iconHTML  

    Due to the rapid increase of contents available under the convergence of broadcasting and Internet, efficient access to personally preferred contents has become an important issue. In this paper, an automatic recommendation scheme based on collaborative filtering is presented for intelligent personalization of (IP)TV services. The proposed scheme does not require TV viewers (users) to make explicit ratings on their watched TV program contents. Instead, it implicitly infers the users' interests on the watched TV program contents. For the recommendation of user preferred TV program contents, our proposed recommendation scheme first clusters TV users into similar groups based on their preferences on the content genres from the user's watching history of TV program contents. For the personalized recommendation of TV program contents to an active user, a candidate set of preferred TV program contents is obtained via collaborative filtering for the group to which the active user belongs. The candidate TV programs for recommendation are then ranked by a proposed novel ranking model. Finally, a set of top- N ranked TV program contents is recommended to the active user. The experimental results show that the proposed TV program recommendation scheme yields about 77% of average precision accuracy and 0.135 value of ANMRR (Average Normalized Modified Retrieval Rank) with top five recommendations for 1,509 people. View full abstract»

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  • Pooling-Based Intra Prediction Mode Coding for Mobile Video Applications

    Publication Year: 2011 , Page(s): 685 - 694
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1294 KB) |  | HTML iconHTML  

    The demand of real-time yet high quality video encoding for portable multimedia devices is increasingly strong. The state of the art H.264/AVC standard provides much higher coding efficiency than its predecessors. However, its high computational complexity of encoding is not suitable for battery-powered mobile devices. In this paper, we introduce a low complexity video encoding scheme based on new pooled macroblock modes mainly targeted for battery-operated portable devices. Since the motion prediction and intra prediction take most of the computation and thus battery consumption, restriction of prediction block sizes is essential in implementing a low complexity encoder. However, if this is not done carefully, it may result in unacceptable degradation of coding efficiency. The problem is overcome by developing new macroblock coding modes which are computationally trivial but effective in coding efficiency. Experimental results with several well-known video test sequences verify a far better performance of the proposed method against the standard H.264/AVC encoder operated in low-complexity configuration. Also we evaluate how less power consumption the proposed low complexity encoder actually consumes compared to that of the H.264/AVC baseline profile. View full abstract»

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  • Collaborative Content Fetching Using MAC Layer Multicast in Wireless Mobile Networks

    Publication Year: 2011 , Page(s): 695 - 706
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1684 KB) |  | HTML iconHTML  

    It is common that current mobile devices are equipped with multiple interfaces such as GPRS or UMTS for wireless WAN (WWAN) links as well as WiFi and/or bluetooth for local networking. Meanwhile, it is also possible that a number of mobile subscribers keep close for a period of time and fetch same content from Internet. Stimulated by these facts, we develop C5, a collaborative content fetching scheme for groups of mobile subscribers with common characteristics. C5 makes a number of new contributions over prior work: (a) a small scale P2SP framework of a hybrid mobile network which considers possible concurrent mobile Internet traffic to maximize the utility of WWAN links; (b) support of MAC layer multicast in community and a new community formation procedure with the multicast rate estimation; (c) an application-level fetching procedure for both server and peer clients. We also formulate the content fetching process in C5 into an optimization problem and give a simple method to estimate the bound of the objective function. Simulation results show that C5 can speed up the equivalent fetching rate for community members. Thus it can improve user experiences for mobile Internet subscribers. View full abstract»

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  • Irregular Mapping and its Application in Bit-Interleaved LDPC Coded Modulation With Iterative Demapping and Decoding

    Publication Year: 2011 , Page(s): 707 - 712
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (677 KB) |  | HTML iconHTML  

    This paper proposes an irregular mapping technique, where a new labeling searched via modified adaptive binary switch algorithm (ABSA), mixed with a pre-fixed labeling, can provide near-optimal match to a given outer channel code. By using the proposed technique, the bit-interleaved low-density parity-check (LDPC) coded modulation systems with iterative demapping/decoding (BILCM-ID) could achieve near-capacity performance. With a slight modification on the LDPC coded modulation scheme of DVB-T2 standard, the proposed technique can improve the iterative demapping system by exploiting significant iterative gain. The superior performance is verified via extrinsic information transfer (EXIT) chart analysis and bit error rate (BER) simulation. View full abstract»

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  • Normalization Factor of Hierarchically Modulated Symbols for Advanced T-DMB System

    Publication Year: 2011 , Page(s): 713 - 717
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (716 KB) |  | HTML iconHTML  

    In this paper, we derived the exact formula for the normalization factor of both B-mode and Q-mode hierarchically modulated symbols of the advanced terrestrial digital multimedia broadcasting (AT-DMB) system. This factor is required to scale the average energy of the transmit symbol to one. After investigating the average energy of hierarchically modulated symbols in AT-DMB, we formulate the normalization factor as a term of the constellation ratio. Based on this normalization factor, we have verified the effect after normalization on bit error rate (BER) performance. View full abstract»

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  • Energy-Efficient Transmission for Protection of Incumbent Users

    Publication Year: 2011 , Page(s): 718 - 720
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (97 KB) |  | HTML iconHTML  

    Cognitive radio (CR) technology can be used to provide flexible mobile multimedia communications. In this article, we investigate energy-efficient design of CR to protect incumbent users, such as broadcasters and telecommunications operators. Power allocation and transmission duration are determined for a CR user exploiting multiple channels. Both energy efficiency of the CR user and interference with the incumbent users are considered. Simulation results demonstrate that the proposed approaches achieve reliable protection and significant performance gain in terms of energy efficiency. View full abstract»

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  • A Reverse-Order Scheduling Scheme for Broadcasting Continuous Multimedia Data Over a Single Channel

    Publication Year: 2011 , Page(s): 721 - 728
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1140 KB) |  | HTML iconHTML  

    In this work, we propose a reverse-order scheduling (ROS) method for broadcasting a video over a single channel. The method firstly partitions the video into equal-length segments, then divides these segments into groups, and finally broadcasts the segments in the same group over the same subchannel in the reverse order of their indices. Further, we also provide a thorough analysis of the performance of the ROS method. The main contribution of the ROS method is to exhibit not only a shorter waiting time but also a smaller buffer requirement. Compared with the Alternative Broadcasting (AB), Hopping-Insertion (HI), and SingBroad methods, the proposed ROS method reduces the average waiting time by 38%~96%, 18%~63%, and 3%~18%, respectively, while the bandwidth of a single channel is capable of more than triple the consumption rate. Further, the ROS method reduces the buffer requirement by 30%~70% and 30%~55% as compared with the AB and SingBroad methods, respectively, while the buffer requirement of the HI method is not given. View full abstract»

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  • Interference Elimination for Chinese DTMB System With Transmit Diversity

    Publication Year: 2011 , Page(s): 729 - 736
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (829 KB) |  | HTML iconHTML  

    When adopting transmit diversity in the Chinese digital television terrestrial broadcasting (DTTB) system, there exists two kinds of interference: training sequences (TSs) from different transmit antennas are overlapped; and the TSs are interfered with OFDM data due to multipath fading. In order to distinguish different TSs, this paper proposes a method to design orthogonal TS set, which also have good correlation characteristic. Subsequently, an iterative algorithm to eliminate the interference between TSs and data is proposed and theoretically analyzed. Finally, simulations are performed and the results show that the system with the proposed scheme can achieve great diversity gain under acceptable computational complexity. View full abstract»

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  • Novel Approach to Support Multimedia Services Over DTMB System

    Publication Year: 2011 , Page(s): 737 - 744
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (377 KB) |  | HTML iconHTML  

    In the conventional digital television terrestrial multimedia broadcasting (DTMB) systems, all the transport streams (TS) from various programs are multiplexed in the level of TS packets, which have the same interleaving, constellation mapping, channel coding, and thus the same quality of service (QoS). Moreover, due to the convolutional interleaving mode, the receivers have to be turned on all the time to obtain the designated data until all the received signals are de-interleaved. In this paper, for DTMB systems, the concept of the physical sub-channel (PSC) in time-frequency domain is proposed, and the scheme to support services with different QoS requirements is also addressed. Based on these techniques, a novel approach to support multimedia services over DTMB systems in a backward compatible manner is proposed and evaluated by computer simulations. View full abstract»

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  • A Measurement Method of the DTMB Modulator

    Publication Year: 2011 , Page(s): 745 - 751
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (370 KB) |  | HTML iconHTML  

    In this paper, a measurement method for DTMB modulator is proposed, which performs the estimation of timing and frequency offsets, channel impulse response (CIR), as well as modulation error ratio (MER) by using only two consecutive frames in an iterative manner. Both simulation and lab testing results show that the measurement method could reflect the performance of DTMB modulator with high accuracy. View full abstract»

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  • A Suboptimal Tone Reservation Algorithm Based on Cross-Entropy Method for PAPR Reduction in OFDM Systems

    Publication Year: 2011 , Page(s): 752 - 756
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (453 KB) |  | HTML iconHTML  

    This paper considers the use of the tone reservation (TR) technique to reduce the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) signal. In the TR scheme, a small number of unused subcarriers called peak reduction carriers (PRCs) are reserved to reduce the PAPR and the goal of the TR scheme is to find the optimal values of the PRCs that minimize the PAPR of the transmitted OFDM signal. Although the TR optimization problem is convex, finding the exact solution to this problem requires a computationally expensive task, which is a potential problem for its practical implementation. To address this problem, the cross-entropy (CE) method is introduced to determine sub-optimum values of the PRCs with low complexity. Compared with the conventional the conventional genetic algorithm (GA)-based TR method, the simulation results show that the proposed CE-assisted TR scheme provides a better PAPR reduction performance and achieves the PAPR values below the predefined various thresholds. View full abstract»

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  • 61st Annual IEEE Broadcast Symposium

    Publication Year: 2011 , Page(s): 757
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    Freely Available from IEEE
  • IEEE International Symposium on Broadband Multimedia Systems and Broadcasting

    Publication Year: 2011 , Page(s): 758
    Save to Project icon | Request Permissions | PDF file iconPDF (1083 KB)  
    Freely Available from IEEE
  • IBC2011 Experience the Future

    Publication Year: 2011 , Page(s): 759
    Save to Project icon | Request Permissions | PDF file iconPDF (901 KB)  
    Freely Available from IEEE
  • 29th International Conference on Consumer Electronics 2011

    Publication Year: 2011 , Page(s): 760
    Save to Project icon | Request Permissions | PDF file iconPDF (979 KB)  
    Freely Available from IEEE
  • IEEE Transactions on Broadcasting information for authors

    Publication Year: 2011 , 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.

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Meet Our Editors

Editor-in-Chief
Yiyan Wu
Communications Research Ctr Canada