Performance Analysis of MIMO- Space-Time Trellis Code System over Fading Channels
28 Jan 2011-pp 262-268
TL;DR: The design criteria for fading channels, employs that transmit and receive antenna diversity is discussed, and it is observed from the simulation results that the code performance is improved by increasing the number of states, and also it provided the coding advantage as theNumber of states and receives antennas increases.
Abstract: This paper discusses the error performance of Space- Time Trellis Code system over fading channels. Multiple-input multiple-output (MIMO) technology constitutes a breakthrough in the design of wireless communications systems, and is already at the core of several wireless standards. It offers high data rate and excellent throughput of wireless communication system. Trellis-code modulation (TCM) is one of the bandwidth efficient coding modulation techniques used in digital communications system. Here we discuss the design criteria for fading channels, employs that transmit and receive antenna diversity. It is observed from the simulation results that the code performance is improved by increasing the number of states. Also it provided the coding advantage as the number of states and receives antennas increases. The simulation have been conducted for 4 Phase Shift Keying (PSK) with data rate 2 b/Hz/s for two transmit and two receive antennas (NT=NR=2) system, provided better performance using 64 states STTC encoder.
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01 Jan 2004
TL;DR: A series of lectures on modern wireless communications, which will deal with important aspects of the installations, transmission of the signals and the phenomena of radio wave propagation, are given by Prof. C. L. Fortescue, Dr. R. Smith-Rose and Dr. V. Appleton.
Abstract: 1. Introduction. 2. Propagation and Noise. 3. Modulation, and Frequency-Division Multiple Access. 4. Coding, and Time-Division Multiple Access. 5. Spread Spectrum, and Code Division Multiple Access. 6. Diversity, and Space-Division Multiple Access. 7. Wireless Architectures. Appendix A: Fourier Theory. Appendix B: Bessel Functions. Appendix C: Random Variables and Random Processes. Appendix D: Matched Filters. Appendix E: Error Function. Appendix F: MAP Algorithm. Appendix G: Capacity of MIMO Links. Appendix H: Eigendecomposition. Appendix I: Adaptive Array Antenna.
503 citations
TL;DR: The pairwise-error probability upper bounds of space-time codes (STCs) in independent Rician fading channels are derived and, based on the performance analysis, novel code design criteria for slow and fast Rayleigh fade channels are developed.
Abstract: The pairwise-error probability upper bounds of space-time codes (STCs) in independent Rician fading channels are derived. Based on the performance analysis, novel code design criteria for slow and fast Rayleigh fading channels are developed. It is found that, in fading channels, the STC design criteria depend on the value of the possible diversity gain of the system. In slow fading channels, when the diversity gain is smaller than four, the code error performance is dominated by the minimum rank and the minimum determinant of the codeword distance matrix. However, when the diversity gain is larger than, or equal to, four, the performance is dominated by the minimum squared Euclidean distance. Based on the proposed design criteria, new codes are designed and evaluated by simulation.
151 citations
"Performance Analysis of MIMO- Space..." refers background in this paper
...Based on these criteria, new 4-phase shift keying (PSK) STTCs have been reported in [ 7 ] slow fading channels, and in [8] for fast fading channels....
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TL;DR: Simulation results and parameter comparison show that these STTC with a feedforward structure offer a better performance on fast fading channels than other known codes while maintaining a comparable performance on slow fading channels.
Abstract: New space-time trellis-coded modulation (STTC) which best satisfies the design criteria proposed by Tarokh, et al. (see IEEE Trans. Inform. Theory, vol.44, p.746-65, 1998) over fast fading channels are presented. STTC with a feedforward structure have been constructed by a systematic and exhaustive search. Simulation results and parameter comparison show that these codes offer a better performance on fast fading channels than other known codes while maintaining a comparable performance on slow fading channels.
126 citations
"Performance Analysis of MIMO- Space..." refers background in this paper
...In general, for random variables with smooth pdfs, the central limit theorem can be applied if the number of random variables in the sum is larger than four [ 9 ]....
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TL;DR: An efficient design procedure is presented for optimizing the coding and diversity gain measures proposed in the first papers on space-time codes and a new simple, but useful, measure of code performance is suggested which augments existing measures.
Abstract: Space-time convolutional codes have shown considerable promise for providing improved performance for wireless communication through combined diversity and coding gain. An efficient design procedure is presented for optimizing the coding and diversity gain measures proposed in the first papers on space-time codes. The procedure is based on some simple lower and upper bounds on coding gain. The same calculations needed to compute these bounds can be used to check either necessary or sufficient conditions on space-time codes which achieve maximum diversity gain. A new simple, but useful, measure of code performance is also suggested which augments existing measures. The use of the design procedure is illustrated and new codes are provided. These codes are shown to outperform the space-time convolutional codes provided in the initial papers introducing space-time codes.
69 citations