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Hokkaido University Collection of Scholarly and Academic Papers >
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Peer-reviewed Journal Articles, etc >
Performance optimization of iterative receiver for wireless communications based on realistic channel conditions
| Title: | Performance optimization of iterative receiver for wireless communications based on realistic channel conditions |
| Authors: | Shi, Xiaonan Browse this author | | Miyanaga, Yoshikazu Browse this author →KAKEN DB |
| Keywords: | MIMO-OFDM | | LDPC | | Iterative receiver | | Realistic channel fading |
| Issue Date: | Jul-2014 |
| Publisher: | Elsevier |
| Journal Title: | Computers & Electrical Engineering |
| Volume: | 40 |
| Issue: | 5 |
| Start Page: | 1498 |
| End Page: | 1507 |
| Publisher DOI: | 10.1016/j.compeleceng.2014.02.012 |
| Abstract: | Adopting orthogonal frequency division multiplexing (OFDM) to low-density parity check (LDPC) coded multiple-input multiple-output (MIMO) is attractive scheme for wireless communication systems. An iterative receiver design for LDPC coded MIMO-OFDM system is proposed as the foundation for enhancing the wireless link performance can deliver the coverage, speed, throughput and reliability. However, in previous works, evaluations are basically assumed for a certain channel scenario and it is inefficient in incorporating different channel scenarios. The aim of this paper is to improve the system range for equivalent error rate, while not significantly increasing system complexity compared to conventional iterative receiver solution under realistic channel environment. We show that our proposed iteration adaptation at receiver can considerably adopt the system to realistic change environment, and reach very high reliability. Simulations of our optimization reveal superior error rate performance and lower computational cost vs. conventional LDPC coded MIMO OFDM system. Our simulation results also capture the effects of realistic vs. typical channel fading types (i.e., Rician vs. Rayleigh, respectively) and fading parameter models (average vs. random azimuth spread and K factor) on system performance and complexity. (C) 2014 Elsevier Ltd. All rights reserved. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/57249 |
| Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 宮永 喜一
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