Soft-input soft-output decoding of variable length codes

被引：20

作者：

Wen, JT ^{[1
]}

Villasensor, J

机构：

[1] PacketVideo Corp, San Diego, CA 92121 USA

[2] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90024 USA

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2002年 / 50卷 / 05期

关键词：

soft decoding; variable length codes;

D O I：

10.1109/TCOMM.2002.1006449

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：

We present a method for utilizing soft information in decoding of variable length codes (VLCs). When compared with traditional VLC decoding, which is performed using "hard" input bits and a state machine, the soft-input VLC decoding offers improved performance in terms of packet and symbol error rates. Soft-input VLC decoding is free from the risk, encountered in hard decision VLC decoders in noisy environments, of terminating the decoding in an unsynchronized state, and it offers the possibility to exploit a priori knowledge, if available, of the number of symbols contained in the packet.

引用

页码：689 / 692

页数：4

共 9 条

[1]

Bauer R., 2000, Proceedings DCC 2000. Data Compression Conference, P93, DOI 10.1109/DCC.2000.838149

[2]

BAUER R, 2001, P IEEE DAT COMPR C S

[3]

Bellman RE, 1966, DYNAMIC PROGRAMMING

[4] A Soft-Input Soft-Output APP Module for Iterative Decoding of Concatenated Codes [J].

Benedetto, S. ;

Divsalar, D. ;

Montorsi, G. ;

Pollara, F. .

IEEE COMMUNICATIONS LETTERS, 1997, 1 (01) :22-24

[5]

Buttigieg V., 1995, THESIS U MANCHESTER

[6] On the Equivalence Between SOVA and Max-Log-MAP Decodings [J].

Fossorier, Marc P. C. ;

Burkert, Frank ;

Lin, Shu ;

Hagenauer, Joachim .

IEEE COMMUNICATIONS LETTERS, 1998, 2 (05) :137-139

[7]

MURAD AH, 1999, P IEEE WIR COMM NETW, V2, P968

[8] Improved joint source-channel decoding for variable-length encoded data using soft decisions and MMSE estimation [J].

Park, M ;

Miller, DJ .

DCC '99 - DATA COMPRESSION CONFERENCE, PROCEEDINGS, 1999, :544-544

[9] Utilizing soft information in decoding of variable length codes [J].

Wen, JT ;

Villasenor, JD .

DCC '99 - DATA COMPRESSION CONFERENCE, PROCEEDINGS, 1999, :131-139

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