Interleaved PC-OFDM to reduce peak-to-average power ratio

被引：0
|
作者：
Jayalath, ADS [1 ]
Tellambura, C [1 ]
机构：
[1] Monash Univ, Sch Comp Sci & Software Engn, Clayton, Vic 3168, Australia
来源：
ADVANCED SIGNAL PROCESSING FOR COMMUNICATION SYSTEMS | 2002年 / 703卷
关键词：
OFDM; peak-to-average power ratio; PC-OFDM; data permutation;
D O I：
暂无
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：
Parallel combinatory orthogonal frequency division multiplexing (PC-OFDM) yields lower maximum peak-to-average power ratio (PAR), higher bandwidth efficiency and lower bit error rate (BER) on Gaussian channels compared to OFDM systems. However, PC-OFDM does not improve the statistics of PAR significantly. In this chapter, the use of a set of fixed permutations to improve the statistics of the PAR of a PC-OFDM signal is presented. For this technique, interleavers are used to produce K - 1 permuted sequences from the same information sequence. The sequence with the lowest PAR, among K sequences, is chosen for the transmission. The PAR of a PC-OFDM signal can be further reduced by 3-4 dB by this technique. Mathematical expressions for the complementary cumulative density function (CCDF) of PAR of PC-OFDM signal and interleaved PC-OFDM signal are also presented.
引用
收藏
页码：239 / 250
页数：12
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