Simplified Log-MAP Decoding with max* Approximation Based on the Jensen Inequality

被引：2

作者：

Sybis, Michal ^{[1
]}

Tyczka, Piotr ^{[1
,2
]}

Papaharalabos, Stylianos ^{[2
]}

Mathiopoulos, Panayiotis Takis ^{[2
]}

机构：

[1] Poznan Univ Tech, Chair Wireless Commun, Poznan, Poland

[2] Natl Observ Athens, Inst Space Applicat & Remote Sensing, Athens, Greece

来源：

2010 IEEE 21ST INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC) | 2010年

关键词：

decoding algorithms; Log-MAP algorithm; Turbo codes; Turbo TCM; max* operator; reduced-complexity algorithms; CODES;

D O I：

10.1109/PIMRC.2010.5671835

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In the paper, a modified Log-MAP algorithm based on a novel approximation of the max* operator derived from the Jensen inequality is proposed. In this approach, the max* operation is performed on n >= 2 arguments, thus the recursive calculations are avoided and significant reduction in the number of operations performed per decoding step, as compared with the conventional Log-MAP, is achieved. Simulation results of BER performance for both turbo codes and turbo trellis-coded modulation (TTCM) employing the new algorithm are given, showing the near-optimal performance of the proposed algorithm.

引用

页码：283 / 287

页数：5

共 50 条

[1] Reduced complexity Log-MAP algorithm with Jensen inequality based non-recursive max* operator for turbo TCM decoding
Sybis, Michal
Tyczka, Piotr
[J]. EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING, 2013,
[2] Reduced complexity Log-MAP algorithm with Jensen inequality based non-recursive max∗ operator for turbo TCM decoding
Michal Sybis
Piotr Tyczka
[J]. EURASIP Journal on Wireless Communications and Networking, 2013
[3] SISO algorithms based on Max-Log-MAP and Log-MAP turbo decoding
Papaharalabos, S.
Sweeney, P.
Evans, B. G.
[J]. IET COMMUNICATIONS, 2007, 1 (01) : 49 - 54
[4] Max-Log-MAP and Log-MAP Decoding Algorithms for UST Symbol Based Turbo Code
Zhang, Dapeng
Liu, Ju
Yang, Xinghai
Ji, Hui
[J]. 2008 4TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING, VOLS 1-31, 2008, : 1496 - 1500
[5] Log-MAP equivalent Chebyshev inequality based algorithm for turbo TCM decoding
Sybis, M.
[J]. ELECTRONICS LETTERS, 2011, 47 (18) : 1049 - U1591
[6] Butterfly Log-MAP decoding algorithm
Hou, J
Lee, MH
Kim, CJ
[J]. JOURNAL OF COMMUNICATIONS AND NETWORKS, 2004, 6 (03) : 209 - 215
[7] A NOVEL SIMPLIFIED LOG-MAP ALGORITHM SUITABLE FOR HARDWARE IMPLEMENTATION OF TURBO DECODING
Thangarajah, Krishnamohan
Shahrrava, Behnam
Khalid, Mohammed A. S.
[J]. 2011 24TH CANADIAN CONFERENCE ON ELECTRICAL AND COMPUTER ENGINEERING (CCECE), 2011, : 1463 - 1465
[8] Modified Log-MAP Algorithm for Simplified Decoding of Turbo and Turbo TCM Codes
Papaharalabos, Stylianos
Sybis, Michal
Tyczka, Piotr
Mathiopoulos, P. Takis
[J]. 2009 IEEE VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5, 2009, : 3181 - +
[9] Combined Max-Log-MAP and Log-MAP of turbo codes
Park, SJ
[J]. ELECTRONICS LETTERS, 2004, 40 (04) : 251 - 252
[10] Linearly approximated log-MAP algorithms for turbo decoding
Cheng, JF
Ottosson, T
[J]. 2000 IEEE 51ST VEHICULAR TECHNOLOGY CONFERENCE, PROCEEDINGS, VOLS 1-3, 2000, : 2252 - 2256

← 1 2 3 4 5 →