Efficient implementation of rate matching for LTE turbo codes

Author

Ma, Chixiang ; Lin, Ping

Author_Institution

Beijing Embedded Syst. Key Lab., Beijing Univ. of Technol., Beijing, China

Volume

1

fYear

2010

fDate

21-24 May 2010

Abstract

Rate matching is an important component in 3^rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) and has a strong impact on its error correcting performance. Rate matching is part of error correct coding, which can impact the performance of hybrid ARQ (HARQ). Circular buffer rate matching algorithm has many advantages over earlier rate matching algorithm. One of its advantages is simple and flexible for any arbitrary code rate in LTE with excellent performance. In this paper, an efficient method to implement high throughput processing is proposed. The method is to rearrange the data order in memory to improve throughput and latency. However, implementation of rate matching is not very straightforward with the modified method. With the aid of the proposed method, rate matching can be implemented in parallel processing with low latency for high date rate applications.

Keywords

automatic repeat request; error correction codes; turbo codes; 3^rd Generation Partnership Project; HARQ; LTE turbo codes; circular buffer rate matching; error correct coding; hybrid ARQ; latency; long term evolution; Automatic repeat request; Channel coding; Delay; Embedded system; Long Term Evolution; Modulation coding; Multiaccess communication; OFDM modulation; Throughput; Turbo codes; 3GPP; LTE; contention-free; parallel; rate matching;

fLanguage

English

Publisher

ieee

Conference_Titel

Future Computer and Communication (ICFCC), 2010 2nd International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-5821-9

Type

conf

DOI

10.1109/ICFCC.2010.5497338

Filename

5497338