Reduction of peak-to-average power ratio of OFDM system using a companding technique

被引：311

作者：

Wang, XB ^{[1
]}

Tjhung, TT ^{[1
]}

Ng, CS ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Elect Engn, Singapore 119260, Singapore

来源：

IEEE TRANSACTIONS ON BROADCASTING | 1999年 / 45卷 / 03期

关键词：

D O I：

10.1109/11.796272

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：

A companding technique is proposed to reduce the peak-to-average-power ratio of orthogonal frequency division multiplexing (OFDM) signal in this paper. The probability density function of the amplitude of OPDM signal is determined. Because of the Gaussian distribution of OFDM signal, companding technique can be quite effective, since large OFDM signal only occurs infrequently. The peak-to-average power ratio of an OFDM system and the optimal companding coefficient are determined in this paper. Symbol error rate of the systems after the companding is derived. The performances of the system with and without the companding are also compared.

引用

页码：303 / 307

页数：5

共 7 条

[1] OFDM FOR DIGITAL TV BROADCASTING [J].

DECOUASNON, T ;

MONNIER, R ;

RAULT, JB .

SIGNAL PROCESSING, 1994, 39 (1-2) :1-32

[2]

Grant AJ, 1998, IEEE VTC P, P2081, DOI 10.1109/VETEC.1998.686123

[3] Clipping noise mitigation for OFDM by decision-aided reconstruction [J].

Kim, D ;

Stüber, GL .

IEEE COMMUNICATIONS LETTERS, 1999, 3 (01) :4-6

[4] DISCRETE MULTIPLE TONE MODULATION WITH COSET CODING FOR THE SPECTRALLY SHAPED CHANNEL [J].

RUIZ, A ;

CIOFFI, JM ;

KASTURIA, S .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1992, 40 (06) :1012-1029

[5] Asymptotic limits in peak envelope power reduction by redundant coding in orthogonal frequency-division multiplex modulation [J].

Shepherd, S ;

Orriss, J ;

Barton, S .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1998, 46 (01) :5-10

[6]

van Nee R, 1998, IEEE VTC P, P2072, DOI 10.1109/VETEC.1998.686121

[7] COFDM - AN OVERVIEW [J].

ZOU, WY ;

WU, YY .

IEEE TRANSACTIONS ON BROADCASTING, 1995, 41 (01) :1-8

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