The impact of frequency-flat fading on the spectral efficiency of CDMA

被引：270

作者：

Shamai, S ^{[1
]}

Verdú, S

机构：

[1] Technion Israel Inst Technol, Dept Elect Engn, IL-32000 Haifa, Israel

[2] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

来源：

IEEE TRANSACTIONS ON INFORMATION THEORY | 2001年 / 47卷 / 04期

基金：

美国国家科学基金会;

关键词：

antenna diversity; channel capacity; code-division multiple access (CDMA); fading channels; Gaussian channels; multiuser detection; multiuser information theory; power control; spread spectrum;

D O I：

10.1109/18.923717

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The capacity of the randomly spread synchronous code-division multiple-access (CDMA) channel subject to frequency-flat fading is studied in the wide-band limit of large number of users. We find the spectral efficiency as a function of the number of users per chip, the distribution of the flat fading, and the signal-to-noise ratio (SNR), for the optimum receiver as well as linear receivers (single-user matched filter, decorrelator, and minimum mean-square errror (MMSE)), The potential improvements due to both decentralized transmitter power control and multiantenna receivers are also analyzed.

引用

页码：1302 / 1327

页数：26

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