Showing papers by "Murat Uysal published in 2000"

Error performance analysis of space-time codes over Rayleigh fading channels

Abstract: Space-time coding is a bandwidth and power efficient method of communication over fading channels that realizes the benefits of multiple transmit and receive antennas. This novel technique has attracted much attention recently. However, currently the only analytical guide to the performance of space-time codes is an upper bound [1] which could be quite loose in many cases. In this paper, an exact pairwise error probability is derived for space-time codes operating over Rayleigh fading channels. Based on this expression, an analytical estimate for bit error probability is computed, taking into account dominant error events. Simulation results indicate that the estimates are of high accuracy in a broad range of signal-to-noise ratios.

Performance of space-time coded CDMA systems for wireless communication

Abstract: The performance of a space-time coded, synchronous code division multiple access (CDMA) system is investigated over Rayleigh fading channels. An exact pairwise error probability is derived based on which an analytical estimate for bit error probability is computed. The analytical results are verified by computer simulation.

Performance of a combined trellis coded quantization/modulation over wireless local-loop environment†

Abstract: In this paper, a combined trellis coded quantization/modulation (TCQ/TCM) scheme is introduced for the wireless local-loop environment modelled with realizable and practical medium parameters. The performance analysis of the combined system is carried out through the evaluation of signal-to-quantization noise ratio (SQNR) versus signal-to-noise ratio (SNR) curves and bit error probability upper bounds. Simulation studies confirm the analytical results. Copyright © 2000 John Wiley & Sons, Ltd.