Journal ArticleDOI
Capacity and error probability analysis for orthogonal space-time block codes over fading channels
Hao Zhang,T.A. Gulliver +1 more
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TLDR
The capacity and error probability of orthogonal space-time block codes (STBCs) are considered for pulse-amplitude modulation/phase shift keying/quadrature-amPLitude modulation (PAM/PSK/QAM) in fading channels and the results are extended to obtain the capacity and probability of error for a multiuser direct sequence code-division multiple-access system employing space- time block coding.Abstract:
The capacity and error probability of orthogonal space-time block codes (STBCs) are considered for pulse-amplitude modulation/phase shift keying/quadrature-amplitude modulation (PAM/PSK/QAM) in fading channels. The approach is based on an equivalent scalar additive white Gaussian noise channel with a channel gain proportional to the Frobenius norm of the matrix channel for the STBC. Using this effective channel, capacity and probability of error expressions are derived for PSK/PAM/QAM modulation with space-time block coding. Rayleigh-, Ricean-, and Nakagami-fading channels are considered. As an application, these results are extended to obtain the capacity and probability of error for a multiuser direct sequence code-division multiple-access system employing space-time block coding.read more
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Book
Near-Capacity Multi-Functional MIMO Systems: Sphere-Packing, Iterative Detection and Cooperation
TL;DR: TheWireless Channel and the Concept of Diversity, a Coherent Versus Differential Turbo Detection of Sphere-packing-aided Single-user MIMO Systems, and a Universal Approach to Space-Time Block Codes: A Universal Approach are reviewed.
Journal ArticleDOI
Closed-form approximation for the outage capacity of orthogonal STBC
TL;DR: A tight analytical approximation for the outage capacity of orthogonal space-time block codes (STBC's) is derived and encompasses different fading distributions and gains between different pairs of transmit and receive antennas, which can occur in distributed STBC networks.
Journal ArticleDOI
Near-Capacity Wireless Transceivers and Cooperative Communications in the MIMO Era: Evolution of Standards, Waveform Design, and Future Perspectives
TL;DR: MIMO-aided transceivers and their cooperation-assisted distributed or virtual MIMO counterparts constitute power-efficient solutions, which justifies the spectacular success of MIMOs.
Patent
Robust cooperative spectrum sensing for cognitive radios
Khaled Ben Letaief,Wei Zhang +1 more
TL;DR: In this paper, relay diversity is employed to compensate for reduced sensing diversity order were some nodes in a cooperative spectrum sensing system cannot report directly, and algebraic coding is combined with relay diversity to decrease the threshold probability of false alarm in relay diversity systems.
References
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Wireless Communications: Principles and Practice
TL;DR: WireWireless Communications: Principles and Practice, Second Edition is the definitive modern text for wireless communications technology and system design as discussed by the authors, which covers the fundamental issues impacting all wireless networks and reviews virtually every important new wireless standard and technological development, offering especially comprehensive coverage of the 3G systems and wireless local area networks (WLANs).
Journal ArticleDOI
A simple transmit diversity technique for wireless communications
TL;DR: This paper presents a simple two-branch transmit diversity scheme that provides the same diversity order as maximal-ratio receiver combining (MRRC) with one transmit antenna, and two receive antennas.
Journal ArticleDOI
On Limits of Wireless Communications in a Fading Environment when UsingMultiple Antennas
G. J. Foschini,M. J. Gans +1 more
TL;DR: In this article, the authors examined the performance of using multi-element array (MEA) technology to improve the bit-rate of digital wireless communications and showed that with high probability extraordinary capacity is available.
Digital communications
TL;DR: This month's guest columnist, Steve Bible, N7HPR, is completing a master’s degree in computer science at the Naval Postgraduate School in Monterey, California, and his research area closely follows his interest in amateur radio.