Variable Interleaver Allocation for Downlink OFDM-IDMA

Variable Interleaver Allocation for Downlink OFDM-IDMA
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下行链路 OFDM-IDMA 的可变交织器分配

DOI:
10.1007/s11277-011-0382-8
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发表时间:
2011-08
影响因子:
2.2
通讯作者:
Shaoqian Li
Shaoqian Li
中科院分区:
计算机科学4区
文献类型:
--
作者:
Yue Xiao;Xu He;Su Hu;Shaoqian Li

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In this letter, a variable interleaver allocation scheme is proposed to alleviate the high peak-to-average power ratio (PAPR) of downlink OFDM-IDMA (orthogonal frequency division multiplexing-interleave division multiple access). The basic idea is to allocate multiple interleaving patterns for each user, so as to decide the best pattern with the lowest peak value. Furthermore, a variable interleaver design scheme is combined to generate multiple patterns from an original one. It is shown that the proposed scheme can achieve the theoretical bound of PAPR reduction performance, while making a good tradeoff among PAPR reduction, system performance and computational complexity.
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