Error floor of pulse amplitude modulation with adaptive sampling in time-dispersive fading channels

被引：0

作者：

Molisch, AF ^{[1
]}

Bölcskei, H ^{[1
]}

机构：

[1] Tech Univ Vienna, INTHFT, A-1040 Vienna, Austria

来源：

NINTH IEEE INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1-3 | 1998年

关键词：

D O I：

暂无

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

We consider the error floor of coherently and differentially detected PAM (pulse amplitude modulation) in time-dispersive fading channels; PAM includes PSK (phase shift keying) and QAM as special cases. We introduce a new Zak-transform based method for computing the error floor. This method can be applied to arbitrary modulation formats and a very general class of time-dispersive channels. We prove that unfiltered BPSK exhibits no error floor when the sampling phase is chosen adaptively and (for coherent detection) the basis pulse satisfies a symmetry condition. For filtered BPSK there is an error floor, which depends on the filter bandwidth. For higher-order modulations, there is always an error floor; it can be attributed to I-Q crosstalk.

引用

页码：884 / 890

页数：7

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