VARIABLE-RATE QAM FOR MOBILE RADIO

被引：289

作者：

WEBB, WT ^{[1
]}

STEELE, R ^{[1
]}

机构：

[1] UNIV SOUTHAMPTON,DEPT ELECTR & COMP SCI,SOUTHAMPTON SO9 5NK,HANTS,ENGLAND

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 1995年 / 43卷 / 07期

关键词：

D O I：

10.1109/26.392965

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Quadrature amplitude modulation (QAM) schemes which vary the number of modulation levels in accordance with the mobile radio fading channel variations are investigated, Important parameters considered are the fading rate and the block size used. We describe how the adaptive QAM modems can be employed and consider their use in a DECT-like TDD packet structure, System performance in the presence of cochannel interference is also considered. Simulations show that the variable rate system has about 5 dB improvement in channel SNR over a fixed 16-level QAM system for BER's between 10(-2) and 10(-5) and channel SNR's between 25 and 40 dB.

引用

页码：2223 / 2230

页数：8

共 8 条

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