Paper Info
Title
Tail-Overlapped SISO Decoding for High-Throughput LTE-Advanced Turbo Decoders
Abstract
This paper proposes a novel decoding algorithm to enhance the throughput of turbo decoding in LTE-Advanced systems and its hardware realization. The proposed method completely removes the undesired phase-switching latency by partially overlapping in-ordered and interleaved decoding phases, and as a result, achieves a significant increase of decoding throughput. Moreover, the algorithm does not degrade error-correcting performance for high-rate codes which are essential to achieve the maximum data rate of LTE-Advanced systems. The proposed method called tail-overlapped decoding can be easily applied to the conventional parallel decoding architecture designed for standardized communication systems. In addition, a new structure for the extrinsic information memory is proposed to eliminate memory contentions. A 3GPP LTE-Advanced turbo decoder supporting both decoding methods is implemented in 0.13 μm CMOS technology to show the effectiveness of the proposed algorithm. The decoder exhibits a decoding rate greater than 1Gbps with six iterations, meeting the peak data rate of the LTE-Advanced standard with much less hardware complexity than those of the previous works.
Year
DOI
Venue
2014
10.1109/TCSI.2014.2332269
IEEE Trans. on Circuits and Systems
Keywords
DocType
Volume
decoder,turbo codes,CMOS integrated circuits,turbo decoder,codecs,LTE-Advanced systems,error-correcting performance,hardware complexity,turbo decoding,parallel decoding architecture,tail-overlapped SISO decoding,overlapped decoding,high-throughput LTE-advanced turbo decoders,error correction codes,3GPP LTE-Advanced turbo decoder,CMOS technology,3G mobile communication,decoding throughput,Long Term Evolution,interleaved decoding phases,High throughput,decoding algorithm,iterations,interleaved codes,phase-switching latency,standardized communication systems
Journal
61
Issue
ISSN
Citations 
9
1549-8328
1
PageRank 
References 
Authors
0.35
0
3
Name
Order
Citations
PageRank
Injae Yoo1275.26
Bongjin Kim26214.14
In-Cheol Park3888124.36