On pilot-assisted MAP detection in frequency-flat Rayleigh fading channels

被引：0
|
作者：
Sgraja, C [1 ]
Egle, J [1 ]
Lindner, J [1 ]
机构：
[1] Univ Ulm, Dept Informat Technol, D-89081 Ulm, Germany
来源：
WCNC 2003: IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE RECORD, VOLS 1-3 | 2003年
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Pilot symbol assisted modulation (PSAM) eases the task of estimating the channel gain and phase in frequency-flat Rayleigh fading. Inaccurate channel estimates may lead to an increased error probability in a subsequent data detection stage. For PSAM and flat Rayleigh fading, the effects of channel estimation errors on the error probability have been analyzed in [1]. We pursue the analysis given in [1] and derive the maximum a-posteriori (MAP) detector which minimizes the symbol error probability by processing the data and pilot receive symbol(s) simultaneously. This detector is compared to the conventional 2-step receiver which performs channel estimation followed by data detection. Moreover, a basic approach to calculate the symbol error probability is given and we study and illustrate the decision regions of the two detectors.
引用
收藏
页码：930 / 935
页数：6
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