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IEEE Transactions on Communications

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Publication Year: 2007, Page(s):C1 - C4
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• IEEE Transactions on Communications publication information

Publication Year: 2007, Page(s): C2
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• Information-Theory Analysis of Skewed Coding for Suppression of Pattern-Dependent Errors in Digital Communications

Publication Year: 2007, Page(s):237 - 241
Cited by:  Papers (14)
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We present information-theory analysis of the tradeoff between bit-error rate improvement and the data-rate loss using skewed channel coding to suppress pattern-dependent errors in digital communications. Without loss of generality, we apply developed general theory to the particular example of a high-speed fiber communication system with a strong patterning effect View full abstract»

• Blind Feedforward Symbol-Timing Estimation With PSK Signals: A Constant-Modulus Approach

Publication Year: 2007, Page(s):242 - 246
Cited by:  Papers (2)  |  Patents (2)
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In this letter, the problem of blind symbol-timing estimation with M-ary phase-shift keying (M-PSK) signals is considered. An estimator exploiting the constant modulus (CM) property of M-PSK constellations and the structure of the received signal when the convolution of the transmitter's signaling pulse and the receiver filter satisfies the Nyquist criterion is proposed. Since the derived estimato... View full abstract»

• Error Rate of Quadrature Subbranch Hybrid Selection/ Maximal-Ratio Combining in Rayleigh Fading

Publication Year: 2007, Page(s):247 - 250
Cited by:  Papers (3)
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The symbol-error rate (SER) of a quadrature subbranch hybrid selection/maximal-ratio combining (QBHS/MRC) scheme for 1-D modulations in Rayleigh fading is examined. At the receiver, N diversity branches are split into 2N in-phase and quadrature subbranches. Traditional hybrid selection/maximal-ratio combining (H-S/MRC) is then applied over the 2N subbranches. M-ary pulse amplitude modulation, incl... View full abstract»

• Performance of DS-CDMA Downlink Systems With Orthogonal UCHT Complex Sequences

Publication Year: 2007, Page(s):251 - 256
Cited by:  Papers (3)
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This letter investigates a transmitted signaling technique using orthogonal unified complex Hadamard transform (UCHT) spreading sequences and the coherent RAKE receiver in direct-sequence code-division multiple-access (DS-CDMA) downlinks to maintain the orthogonality between users and reduce the effect of multipath fading and interference from other users. A general multipath-fading channel model ... View full abstract»

• Spread-Spectrum Code Acquisition in the Presence of Cell Correlation

Publication Year: 2007, Page(s):257 - 261
Cited by:  Papers (9)
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A new special function, called the modified generalized Q (MGQ) function, is here defined to analytically express the performance of the pseudonoise code acquisition based on matched filter correlators. In the considered case of two cells per chip, no convergent infinite series have been found in the open literature expressing the probabilities of false alarm and detection. The performance is anal... View full abstract»

• Analysis of the Channel Energy Capture in Ultra-Wideband Transmitted Reference Systems

Publication Year: 2007, Page(s):262 - 265
Cited by:  Papers (11)
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In this letter, we analyze the expected value of the channel energy capture as a function of the integration interval of the correlator in a transmitted reference system. A modified Saleh-Valenzuela channel model is employed. We observe that for the system specifications (such as channel model, data rate, and signal-to-noise ratio) considered here, an integration interval that captures approximate... View full abstract»

• Characteristic Functions for Optimum-Combining Output SINR With AWGN and Correlated Interference

Publication Year: 2007, Page(s):266 - 270
Cited by:  Papers (5)
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Optimum combining (OC) is a powerful means for combatting co-channel interference. Its performance, however, is difficult to analyze. The prevailing methodology in current use is to neglect the influence of additive white Gaussian noise (AWGN). Inclusion of AWGN into the analysis usually leads to mathematical intractability, except for some extreme cases. In this letter, we formulate the problem i... View full abstract»

• Model-Averaged Interference Rejection Combining

Publication Year: 2007, Page(s):271 - 274
Cited by:  Papers (5)
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We present a novel algorithm for interference suppression when the number of interferers is unknown. The key idea is to parameterize the second-order statistics of the interference via a mixture of several low-rank models. Numerical examples illustrate the performance of the method. View full abstract»

• On Minimum-WER Performance of a Class of LDPC Codes for the BSC/E Under Extended Bounded-Distance Decoding

Publication Year: 2007, Page(s):275 - 281
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We study the word-error-rate (WER) performance and the WER-minimizing decision thresholds plusmnt* for the class of row-column-diagonal (RCD) array codes and their generalizations on the binary symmetric channel with erasures (BSC/E) where decoding is via an extended bounded-distance decoder (e-BDD). This model applies to very-high-data-rate systems where soft-decision iterative decoding is imprac... View full abstract»

• Analysis of Differential Orthogonal Space–Time Block Codes Over Semi-Identical MIMO Fading Channels

Publication Year: 2007, Page(s):282 - 291
Cited by:  Papers (7)
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We study the performance of differential orthogonal space-time block codes (OSTBC) over independent and semi-identically distributed block Rayleigh fading channels. In this semiidentical fading model, the channel gains from different transmit antennas to a common receive antenna are identically distributed, but the gains associated with different receive antennas are nonidentically distributed. Ar... View full abstract»

• Hybrid Hard-Decision Iterative Decoding of Irregular Low-Density Parity-Check Codes

Publication Year: 2007, Page(s):292 - 302
Cited by:  Papers (4)  |  Patents (2)
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Time-invariant hybrid (HscrTI) decoding of irregular low-density parity-check (LDPC) codes is studied. Focusing on HscrTI algorithms with majority-based (MB) binary message-passing constituents, we use density evolution (DE) and finite-length simulation to analyze the performance and the convergence properties of these algorithms over (memoryless) binary symmetric channels. T... View full abstract»

• LDPC Codes Based on Latin Squares: Cycle Structure, Stopping Set, and Trapping Set Analysis

Publication Year: 2007, Page(s):303 - 312
Cited by:  Papers (24)  |  Patents (19)
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It is well known that certain combinatorial structures in the Tanner graph of a low-density parity-check (LDPC) code exhibit a strong influence on its performance under iterative decoding. These structures include cycles, stopping/trapping sets, and parameters such as the diameter of the code. In general, it is very hard to find a complete characterization of such configurations in an arbitrary co... View full abstract»

• Spectrally Efficient UWB Pulse Shaping With Application in Orthogonal PSM

Publication Year: 2007, Page(s):313 - 322
Cited by:  Papers (43)
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In this paper, we present a method to obtain a set of orthogonal pulses to be used in pulse-shape modulation (PSM) for ultra-wideband communications. The pulses are built as linear combinations of Hermite functions, which are shown to have unique advantageous features. Mathematical restrictions of orthogonality and spectral efficiency are introduced as guidelines to a fully explained search proced... View full abstract»

• A Theory for Maximizing the Lifetime of Sensor Networks

Publication Year: 2007, Page(s):323 - 332
Cited by:  Papers (36)
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An important issue in wireless sensor networks is the limited energy and bandwidth resources. A novel theory is developed here for maximizing the lifetime of unicast multihop wireless sensor networks. An optimal centralized solution is presented in the form of an iterative algorithm. The algorithm attempts to find a Pareto-optimal (PO) solution. In the first iteration, the minimum lifetime of the ... View full abstract»

• An Internally Coded TH/OCDMA Scheme for Fiber Optic Communication Systems and Its Performance Analysis—Part I: Using Optical Orthogonal Code

Publication Year: 2007, Page(s):333 - 344
Cited by:  Papers (8)
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In this paper, a new internally coded time-hopping optical code-division multiple-access (TH/OCDMA) scheme for fiber-optic communication systems is proposed, and its multiple-access performance is evaluated using optical orthogonal codes (OOCs). In the proposed method, the duration of each bit is divided into Ns frames, each one containing L chips. Two signature codes, namely, one pseud... View full abstract»

• New Approach for Error Compensation in Coded V-BLAST OFDM Systems

Publication Year: 2007, Page(s):345 - 355
Cited by:  Papers (56)
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In this paper, we investigate coded layered space-time architectures for frequency-selective fading multiple-input multiple-output orthogonal frequency-division multiplexing (OFDM) channels. By computing outage capacity formulas, we will show that the capacity of the vertical Bell Labs layered space-time (V-BLAST) architecture can closely approach the Shannon capacity in the frequency-selective OF... View full abstract»

• A Necessary Condition on the Location of Pilot Tones for Maximizing the Correction Capacity in OFDM Systems

Publication Year: 2007, Page(s):356 - 366
Cited by:  Papers (11)
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This paper presents a new view of the Bose-Chaudhuri-Hocquengem (BCH) code through the addition of some flexibility to the syndromes distribution in the transmitted sequence. In order to get this flexibility, we derive a necessary condition (NC) on the syndromes distribution for decoding BCH codes, which includes the already known Hartmann-Tzeng proposition. This NC is essentially deduced from the... View full abstract»

• Tools for Performance Analysis and Design of Space–Time Block Codes

Publication Year: 2007, Page(s):367 - 379
Cited by:  Papers (8)
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Space-time block codes (STBCs) have attracted recent interest due to their ability to take advantage of both space and time diversity to reliably transmit data over a wireless fading channel. In many cases, their design is based on asymptotically tight performance criteria, such as the worst-case pairwise error probability (PEP) or the union bound. However, these quantities fail to give an accurat... View full abstract»

• Lattice Codes and Generalized Minimum Distance Decoding for OFDM Systems

Publication Year: 2007, Page(s): 380
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• A Blind RAKE Receiver With Robust Multiuser Interference Cancellation for DS/CDMA Communications

Publication Year: 2007, Page(s): 380
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• Space–Time Trellis Codes Over Rapid Rayleigh Fading Channels With Channel Estimation—Part I: Receiver Design and Performance Analysis

Publication Year: 2007, Page(s): 380
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• Incremental Calculation of Minimum-Redundancy Length-Restricted Codes

Publication Year: 2007, Page(s): 380
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• When Is Differential Detection Optimum for Ideal and Partially Coherent Reception/Demodulation of $M$-PSK?

Publication Year: 2007, Page(s): 380
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Aims & Scope

IEEE Transactions on Communications focuses on all telecommunications including telephone, telegraphy, facsimile, and point-to-point television by electromagnetic propagation.

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Meet Our Editors

Editor-in-Chief
Naofal Al-Dhahir
University of Texas at Dallas