An Encoder/Decoder with Throughput over Gigabits/sec for Rate-compatible LDPC Codes with Wide Code Rates

被引:0
作者
He, Zhiyong [1 ,2 ]
Fortier, Paul [2 ]
Roy, Sebastien [3 ]
Xu, Hushan [1 ]
机构
[1] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
[2] Univ Laval, Dept Elect & Comp Engn, Quebec City, PQ G1K 7P4, Canada
[3] Univ Sherbrooke, Dept Elect & Comp Engn, Sherbrooke, PQ J1K 2R1, Canada
来源
2014 IEEE 12TH INTERNATIONAL NEW CIRCUITS AND SYSTEMS CONFERENCE (NEWCAS) | 2014年
关键词
PARITY-CHECK CODES; ERROR FLOOR; DESIGN;
D O I
暂无
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
A challenge in the design of rate-compatible (RC) low-density parity-check (LDPC) codes is how to maximize the range of code rates. In this paper, we propose a class of RC LDPC codes with a very wide range of code rates. To ensure linear encoding, dual-diagonal form for the parity part of the mother parity-check matrix is used. Constructed from shifted identity matrices, the proposed codes are particularly well-suited for the high-speed implementation of parallel encoders and parallel decoders. To widen the range of code rates, we have proposed an optimal transmission scheme, which keeps the optimal degree distribution unchanged for the mother code and all daughter codes. Thus, the proposed technique pushes the upper bound of code rates to 0.96, which is the highest rate in RC LDPC codes in the world, based on our best knowledge. The implementation results into field programmable gate array (FPGA) devices indicate that a parallel encoder (decoder) for the proposed RC LDPC codes is capable of reaching a throughput of 7.2 (1.8) Gigabits per second using a clock frequency of 150 MHz.
引用
收藏
页码:181 / 184
页数:4
相关论文
共 11 条
[1]   A Rate-Compatible Puncturing Scheme for Finite-Length LDPC Codes [J].
Asvadi, Reza ;
Banihashemi, Amir H. .
IEEE COMMUNICATIONS LETTERS, 2013, 17 (01) :147-150
[2]   Design of Rate-Compatible Structured LDPC Codes for Hybrid ARQ Applications [J].
El-Khamy, Mostafa ;
Hou, Jilei ;
Bhushan, Naga .
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2009, 27 (06) :965-973
[3]   Quasi-cyclic low-density parity-check codes from circulant permutation matrices [J].
Fossorier, MPC .
IEEE TRANSACTIONS ON INFORMATION THEORY, 2004, 50 (08) :1788-1793
[4]   Rate-compatible punctured low-density parity-check codes with short block lengths [J].
Ha, J ;
Kim, J ;
Klinc, D ;
McLaughlin, SW .
IEEE TRANSACTIONS ON INFORMATION THEORY, 2006, 52 (02) :728-738
[5]   Lowering error floor of LDPC codes using a joint row-column decoding algorithm [J].
He, Zhiyong ;
Roy, Sebastien ;
Fortier, Paul .
2007 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-14, 2007, :920-925
[6]   FPGA implementation of LDPC decoders based on joint row-column decoding algorithm [J].
He, Zhiyong ;
Roy, Sebastien ;
Fortier, Paul .
2007 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-11, 2007, :1653-1656
[7]   A class of irregular LDPC codes with low error floor and low encoding complexity [J].
He, Zhiyong ;
Fortier, Paul ;
Roy, Sebastien .
IEEE COMMUNICATIONS LETTERS, 2006, 10 (05) :372-374
[8]   High-speed Design of Adaptive LDPC Codes for Wireless Networks [J].
He, Zhiyong ;
Roy, Sebastien .
2008 Joint IEEE North-East Workshop on Circuits and Systems and TAISA Conference, 2008, :249-252
[9]   The Design of Efficiently-Encodable Rate-Compatible LDPC Codes [J].
Kim, Jaehong ;
Ramamoorthy, Aditya ;
McLaughlin, Steven W. .
IEEE TRANSACTIONS ON COMMUNICATIONS, 2009, 57 (02) :365-375
[10]   Efficient puncturing, method for rate-compatible low-density parity-check codes [J].
Park, Hyo Yol ;
Kang, Jae Won ;
Kirrit, Kwang Soon ;
Whang, Keurn Chan .
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2007, 6 (11) :3914-3919