Multilevel-coded QAM with MIMO turbo-equalization in broadband single-carrier signaling

被引：19
|
作者：
Kansanen, K [1 ]
Schneider, C
Matsumoto, T
Thomä, R
机构：
[1] Univ Oulu, Oulu 90014, Finland
[2] Tech Univ Ilmenau, D-98684 Ilmenau, Germany
来源：
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2005年 / 54卷 / 03期
关键词：
automatic repeat-request; bit-interleaved modulation; multilevel coding; multiple-input-multiple-output (MIMO) systems; throughput efficiency; turbo equalization;
D O I：
10.1109/TVT.2005.844663
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 new scheme employing multilevel coded bit-interleaved transmission allowing for efficient turbo-equalization is proposed for multiple-input-multiple-output (MIMO) broadband single-carrier signaling. The proposed scheme is based on block-partitioned hierarchical constellations and offers robustness in data throughput efficiency against varying spatio-temporal characteristics of fading channels. The proposed scheme is compared to a standard bit-interleaved-coded-modulation (BICM) system in frequency-selective channels, and found to offer better overall throughput. It is also shown that level-wise retransmission control with the proposed multilevel single-carrier signaling scheme can offer further throughput improvement. Channel measurement-based simulations are used to evaluate performances of both schemes in real fields. Channel parameter analysis using a superresolution technique is performed to clarify the underlying reasons for the performance characteristics of the systems.
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页码：954 / 966
页数：13
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