HARQ Throughput Performance of OFDM / TDM Using MMSE-FDE in a Frequency-selective Fading Channel
HARQ Throughput Performance of OFDM / TDM Using MMSE-FDE in a Frequency-selective Fading Channel
复制标题
在频率选择性衰落信道中使用 MMSE-FDE 的 OFDM/TDM 的 HARQ 吞吐量性能
DOI:
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复制
发表时间:
2008
期刊:
影响因子:
--
通讯作者:
F. Adachi
中科院分区:
文献类型:
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作者:
H. Gačanin;F. Adachi
Throughput is an important performance measure for data communications over a wireless channel. Orthogonal frequency division multiplexing (OFDM) with hybrid automatic repeat request (HARQ) achieves a good throughput performance over a frequency-selective fading channel. In OFDM with HARQ, however, during the first transmission uncoded information packet is transmitted. Consequently, the channel frequencyselectivity cannot be exploited since frequency-domain equalization (FDE) is not designed to take the channel advantages. In particular, the HARQ throughput performance of OFDM cannot be improved even for a high signal-to-noise power ratio (SNR). In this paper, to increase the HARQ throughput of conventional OFDM, we present the use of OFDM combined with time division multiplexing (OFDM/TDM) using minimum mean square error FDE (MMSE-FDE) designed to exploit the channel frequency-selectivity. It was shown, by computer simulation, that OFDM/TDM using MMSE-FDE with HARQ achieves a higher throughput than the conventional OFDM due to frequency diversity gain during the first transmission. It was also shown that OFDM/TDM using MMSE-FDE performs better in a stronger frequency-selective fading channel.
影响因子:
11.2
作者:
Falconer, D;Ariyavisitakul, SL;Eidson, B
通讯作者:
Eidson, B
DOI:
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发表时间:
2004
期刊:
西洋精神史における言語観の変遷(松田隆美編)(慶應義塾大学出版会)
影响因子:
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作者:
斎藤慶典
通讯作者:
斎藤慶典