Title :
Design of a High-Speed Asynchronous Turbo Decoder
Author :
Golani, Pankaj ; Dimou, Georgios D. ; Prakash, Mallika ; Beerel, Peter A.
Author_Institution :
Dept. of Electr. Eng.-Syst., Univ. of Southern California, Los Angeles, CA
Abstract :
This paper explores the advantages of high performance asynchronous circuits in a semi-custom standard cell environment for high-throughput turbo coding. Turbo codes are high-performance error correction codes used in applications where maximal information transfer is needed over a limited-bandwidth communication link in the presence of data corrupting noise. Specifically we designed an asynchronous high-speed turbo decoder that can be potentially used for new wireless communications protocols with close to OC-12 throughputs. The design has been implemented using a new static single-track-full-buffer (SSTFB) standard cell library in IBM 0.18 mum technology that provides low latency, fast cycle-time, and more robustness to noise than previously studied single-track full-buffer technology (STFB). A high-speed synchronous counterpart using the same high-speed architecture is designed in the same technology for comparison. The results demonstrate that for a variety of network constraints, the asynchronous design provides advantages in throughput per area. Moreover, the asynchronous design can support very low-latency network constraints not achievable with the synchronous alternative.
Keywords :
asynchronous circuits; decoding; error correction codes; turbo codes; IBM technology; OC-12 throughputs; asynchronous circuits; data corrupting noise; error correction codes; high-speed asynchronous turbo decoder; high-throughput turbo coding; limited-bandwidth communication link; low-latency network constraints; semi-custom standard cell environment; size 0.18 mum; static single-track-full-buffer standard cell library; wireless communications protocols; Asynchronous circuits; Circuit noise; Decoding; Error correction codes; Libraries; Throughput; Turbo codes; Wireless application protocol; Wireless communication; Working environment noise;
Conference_Titel :
Asynchronous Circuits and Systems, 2007. ASYNC 2007. 13th IEEE International Symposium on
Conference_Location :
Berkeley, CA
Print_ISBN :
0-7695-2771-X
DOI :
10.1109/ASYNC.2007.16