Multi-rate LDPC decoder implementation for CMMB

Author

Jiang, Xiaobo ; Yuan, Qun

Author_Institution

Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China

fYear

2010

fDate

6-8 Dec. 2010

Firstpage

1

Lastpage

4

Abstract

In this paper, a multi-rate Low Density Parity Check (LDPC) decoder for China Mobile Multimedia Broadcasting (CMMB) is proposed. The architecture of proposed decoder only utilizes a parallel with 2 for ½ rate and 1 for ¾ rate can meet the throughput requirements for the CMMB standard. Various techniques are employed to significantly reduce memory and logic resources, including a special quantization scheme, solution for memory collision, the reuse properties of layered decoding, compressing of check-to-variable messages and the layered algorithm, which lead to a reduction of memory and logic resources by a half.

Keywords

digital multimedia broadcasting; mobile communication; multimedia communication; parity check codes; quantisation (signal); CMMB standard; China mobile multimedia broadcasting; check-to-variable message; layered algorithm; logic resource; low density parity check decoder; memory collision; memory resources; multirate LDPC decoder implementation; special quantization scheme; Decoding; Field programmable gate arrays; Indexes; Lead; Memory management; Parity check codes; Random access memory;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communication Systems (ISPACS), 2010 International Symposium on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-7369-4

Type

conf

DOI

10.1109/ISPACS.2010.5704699

Filename

5704699