Title :
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
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;
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
DOI :
10.1109/ICSICT.2014.7021351
