NDLI: Concatenated eIRA Codes for Tamed Frequency Modulation

Content Provider	IEEE Xplore Digital Library
Author	Jianrong Bao Yafeng Zhan Jianhua Lu
Copyright Year	2008
Description	Author affiliation: Dept. of Electron. Eng., Tsinghua Univ., Beijing (Jianrong Bao; Yafeng Zhan; Jianhua Lu)
Abstract	A new scheme of the extended irregular repeat- accumulate (eIRA) coded tamed frequency modulation (TFM) for deep space communications is introduced in this paper. It is mainly based on the optimal concatenation of the eIRA code and the continuous phase encoder (CPE) decomposed from TFM. In order to obtain good performance of the eIRA coded TFM, the main principle of our scheme is to jointly optimize the concatenation by eliminating the short loops in the Tanner graph of the eIRA code and the coding part of TFM and to jointly decode between them. Then our scheme without interleaving and the contrast scheme with interleaving are simulated in an additive white Gaussian noise (AWGN) channel which is typical in deep space communications. Simulation results have shown that our scheme can obtain lower complexity and less decoding delay (due to the reduction of interleaving) at the cost of just 0.1-0.15 dB performance loss when compared to the scheme with interleaving given bit-error-ratio (BER) of 10 5. Therefore, our scheme can be used to implement the coded TFM system for deep space communications with good performance and low complexity.
Starting Page	1886
Ending Page	1891
File Size	150240
Page Count	6
File Format	PDF
ISBN	9781424420759
DOI	10.1109/ICC.2008.362
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Concatenated codes Frequency modulation Interleaved codes AWGN Decoding Additive white noise Delay Costs Performance loss Bit error rate
Content Type	Text
Resource Type	Article

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