https://scholars.lib.ntu.edu.tw/handle/123456789/299299
標題: | Low Complexity Joint Channel Estimation and Decoding for Pilot Symbol Assisted Modulation and Multiple Differential Detection Systems with Correlated Rayleigh Fading | 作者: | E. Geraniotis HSUAN-JUNG SU |
關鍵字: | Channel estimation; Iterative processing; Multiple differential detection (MDD); Pilot symbol-assisted modulation (PSAM); Soft decoding | 公開日期: | 二月-2002 | 起(迄)頁: | 249-261 | 來源出版物: | IEEE Transactions on Communications | 摘要: | Joint channel estimation and decoding in a time-varying Rayleigh fading channel is considered. Knowing that the optimal solution or even the truncated near-optimal solution using iterative processing has an exponential complexity which hinders the practicability, a reduced complexity approach is proposed. This approach keeps the existing channel estimation and decoding schemes almost intact, while applying iterative processing to effectively exchange information between them. Thus, the complexity is rendered linear, and estimator adaptability can be easily established. We apply this approach to pilot symbol-assisted modulation (PSAM) and differentially modulated systems. It turns out that the performance is improved and the robustness to fading parameters is enhanced. Through simulations, we also show that the proposed method performs almost as well as the near-optimal design. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036474641&doi=10.1109%2f26.983321&partnerID=40&md5=538d3d1e3da4619025c16a1769f65aa4 | DOI: | 10.1109/26.983321 | SDG/關鍵字: | Channel estimation; Bit error rate; Computer simulation; Decoding; Modulation; Phase shift keying; Rayleigh fading; Communication channels (information theory) |
顯示於: | 電信工程學研究所 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。