Novel hybrid ARQ scheme using LDPC codes and partial retransmissions

Author

Uchôa, André Gustavo Degraf ; Souza, Richard Demo ; Pellenz, Marcelo Eduardo

Author_Institution

CPGEI, UTFPR, Curitiba, Brazil

fYear

2009

fDate

10-11 Sept. 2009

Firstpage

1

Lastpage

6

Abstract

The design of a novel HARQ scheme using LDPC codes, partial retransmissions, and diversity combining is presented. The theoretical throughput of the proposed scheme is estimated by means of EXIT charts. It is shown that the proposed method outperforms the classical equal gain combining (EGC) method while requiring few more overall decoding iterations. The transmission control protocol (TCP) performance when the proposed method is used in the physical layer is also investigated. Simulation results show that the gains with respect to the classical EGC scheme can be as large as 3.5 dB.

Keywords

automatic repeat request; parity check codes; transport protocols; LDPC codes; diversity combining; equal gain combining; hybrid automatic repeat request; low density parity check; partial retransmissions; transmission control protocol; Automatic repeat request; Communication standards; Cyclic redundancy check; Decoding; Diversity reception; Error correction codes; Multiaccess communication; Parity check codes; Throughput; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2009. LATINCOM '09. IEEE Latin-American Conference on

Conference_Location

Medellin

Print_ISBN

978-1-4244-4387-1

Electronic_ISBN

978-1-4244-4388-8

Type

conf

DOI

10.1109/LATINCOM.2009.5304964

Filename

5304964