NDLI: Iterative decoding of precoded multichannel system with PAPR reduction

Content Provider	IEEE Xplore Digital Library
Author	Tsung-Sheng Tang Chung-Pi Lee Hsuan-Jung Su
Copyright Year	2015
Description	Author affiliation: Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan (Tsung-Sheng Tang; Chung-Pi Lee; Hsuan-Jung Su)
Abstract	In a multichannel system, the transmitter can perform precoding techniques to alleviate the effects of fading and 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 using a PAPR reduction method based on integer reversible mapping which neither introduces redundancy nor requires any control signaling. However, without proper decoding methods that can produce soft output, the application of this PAPR reduction method to practical systems becomes limited because the channel decoding performance will be affected and iterative decoding of the precode and the channel code is not possible. In this paper, we investigate how to provide soft outputs for the decoding of the precode with PAPR reduction using a list sphere decoder. The simulation results show that list sphere decoding can provide effective soft output for the precode. They also imply that the precode with PAPR reduction, together with the outer channel code, can provide concatenation gain.
Starting Page	82
Ending Page	86
File Size	250110
Page Count	5
File Format	PDF
ISBN	9781479988686
ISSN	23791276
e-ISBN	9781479988549
DOI	10.1109/WOCC.2015.7346182
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-10-23
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Peak to average power ratio Receivers MIMO Optical fiber communication Decoding Iterative decoding
Content Type	Text
Resource Type	Article

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