A theoretical characterization of nonlinear distortion effects in OFDM systems

被引：457

作者：

Dardari, D ^{[1
]}

Tralli, V

Vaccari, A

机构：

[1] Univ Bologna, CNIT, DEIS, I-40136 Bologna, Italy

[2] Univ Bologna, DEIS, CSITE, CNR, I-40136 Bologna, Italy

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2000年 / 48卷 / 10期

关键词：

communication theory; nonlinearities; OFDM systems;

D O I：

10.1109/26.871400

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：

This paper presents a theoretical characterization of nonlinear distortion effects in orthogonal frequency-division multiplexing (OFDM) transmission systems. In the theoretical framework developed, it is shown that the effects on the decision variables of the in-band distortion introduced by a bandpass memoryless nonlinearity can be described by means of a complex gain and an additive Gaussian term with zero mean and suitable variance; analytical expressions for gain and variance are given. The conditions which allow this description are emphasized and discussed, As a consequence, a completely analytical procedure to evaluate error probability is also obtained and illustrated using OFDM/discrete multitone modulation (DMT) systems with rectangular pulse shaping; for the soft-envelope limiter nonlinearity, a closed form is derived. A comparison with simulation results is carried out to verify the accuracy of this method.

引用

页码：1755 / 1764

页数：10

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