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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/60412
標題: | 具降低峰均值功率比預先編碼多通道系統之遞迴解碼 Iterative Decoding of Precoded Multichannel System with PAPR Reduction |
作者: | Tsung-Sheng Tang 湯宗盛 |
指導教授: | 蘇炫榮 |
關鍵字: | 峰均值功率比,預先編碼,多通道,遞迴解碼,列舉球面解碼, PAPR,precode,multichannel,iterative decode,list sphere decode, |
出版年 : | 2013 |
學位: | 碩士 |
摘要: | In a multichannel system, the transmitter can perform precoding techniques to overcome the sub-channel interference. However, the precoding transformation matrix usually results in high peak to average power ratio (PAPR). In order to avoid inefficiently operating the power amplifier, for a precoded multi-input multi-output (MIMO) system, we consider the system with the PAPR reduction method based on integer reversible mapping which does not introduce redundancy or requires any control signaling. Nevertheless, the conventional decoding for the precoded system cannot be directly applied to our system model, otherwise a significant performance loss in bit error rate incurs. Therefore, we propose a decoding mechanism which uses the list sphere decoding and extracts the soft information for iterative detection and decoding. A noticeable improvement on the error performance is shown in simulations. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/60412 |
全文授權: | 有償授權 |
顯示於系所單位: | 電信工程學研究所 |
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ntu-102-1.pdf 目前未授權公開取用 | 1.67 MB | Adobe PDF |
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