LLR-BASED SUCCESSIVE CANCELLATION LIST DECODING OF POLAR CODES

被引：0

作者：

Balatsoukas-Stimming, Alexios ^{[1
]}

Parizi, Mani Bastani ^{[1
]}

Burg, Andreas ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, CH-1015 Ecublens, Switzerland

来源：

2014 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP) | 2014年

关键词：

Successive Cancellation List Decoder; Polar Codes; Hardware Implementation;

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

We present an LLR-based implementation of the successive cancellation list (SCL) decoder. To this end, we associate each decoding path with a metric which (i) is a monotone function of the path's likelihood and (ii) can be computed efficiently from the channel LLRs. The LLR-based formulation leads to a more efficient hardware implementation of the decoder compared to the known log-likelihood based implementation. Synthesis results for an SCL decoder with block-length of N = 1024 and list sizes of L = 2 and L = 4 confirm that the LLR-based decoder has considerable area and operating frequency advantages in the orders of 50% and 30%, respectively.

引用

页数：5

共 9 条

[1] A Simplified Successive-Cancellation Decoder for Polar Codes [J].

Alamdar-Yazdi, Amin ;

Kschischang, Frank R. .

IEEE COMMUNICATIONS LETTERS, 2011, 15 (12) :1378-1380

[2]

Arikan E., 2009, P IEEE INT S INF THE, P1493

[3] Channel Polarization: A Method for Constructing Capacity-Achieving Codes for Symmetric Binary-Input Memoryless Channels [J].

Arikan, Erdal .

IEEE TRANSACTIONS ON INFORMATION THEORY, 2009, 55 (07) :3051-3073

[4]

Balatsoukas-Stimming A., 2013, IEEE T CIRCUIT UNPUB

[5] A Semi-Parallel Successive-Cancellation Decoder for Polar Codes [J].

Leroux, Camille ;

Raymond, Alexandre J. ;

Sarkis, Gabi ;

Gross, Warren J. .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2013, 61 (02) :289-299

[6]

Leroux C, 2011, INT CONF ACOUST SPEE, P1665

[7] Stack decoding of polar codes [J].

Niu, K. ;

Chen, K. .

ELECTRONICS LETTERS, 2012, 48 (12) :695-697

[8]

Tal I, 2011, IEEE INT SYMP INFO, P1, DOI 10.1109/ISIT.2011.6033904

[9] Low-Latency Sequential and Overlapped Architectures for Successive Cancellation Polar Decoder [J].

Zhang, Chuan ;

Parhi, Keshab K. .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2013, 61 (10) :2429-2441

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