LDPC decoder for WiMAX on NOC based multiprocessor platform

Author

Lingyun Zeng ; Tengyue Yuan ; Jun Han ; Xiaoyang Zeng

Author_Institution

State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai, China

fYear

2014

fDate

28-31 Oct. 2014

Firstpage

1

Lastpage

3

Abstract

Low density parity check (LDPC) code is an error correct code that can achieve performance close to Shannon limit and it is widely adopted in communication systems such as WiMAX and Wi-Fi. This paper presents a design of a flexible LDPC decoder for WiMAX based on the NoC platform. The implementation adopts layered decoding algorithm and exploits high parallelism that lies in the algorithm. Considering large quantity of data exchange between cores, we use stepped data exchange strategy and master-slave structure to reduce communication cost. The Cycle accurate simulation results show high speed-up and scalability of code rate of 5/6 with different code length in WiMAX in 4/8/16 processor systems.

Keywords

WiMax; codecs; data communication; decoding; multiprocessing systems; network-on-chip; parity check codes; LDPC decoder; NOC based multiprocessor platform; NoC platform; Wi-Fi; WiMAX; code rate scalability; data exchange strategy; layered decoding algorithm; low density parity check code; master-slave structure; processor systems; Abstracts; Programmable logic arrays; WiMAX;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2014 12th IEEE International Conference on

Conference_Location

Guilin

Print_ISBN

978-1-4799-3296-2

Type

conf

DOI

10.1109/ICSICT.2014.7021351

Filename

7021351