Joint channel identification in punctured hybrid ARQ retransmissions

Author

Roberson, Jeremy ; Ding, Zhi

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of California Davis, CA, USA

Volume

4

fYear

2004

fDate

21-25 March 2004

Firstpage

2099

Abstract

The channel estimation of a bandwidth efficient automatic repeat request (ARQ) system in which retransmissions are symbol or bit-wise punctured is presented in this paper. Unlike simple ARQ in which an erroneous packet is retransmitted, many hybrid ARQ systems aim to conserve bandwidth by only retransmitting a punctured or recoded data packet. In this paper, we formulate a joint subspace based blind channel estimation algorithm for a punctured hybrid ARQ network. We show that this new method can improve the identifiability conditions for channel estimation as well as the overall system performance.

Keywords

automatic repeat request; channel estimation; packet radio networks; bandwidth conservation; bandwidth efficient automatic repeat request; identifiability condition; joint subspace blind channel estimation algorithm; punctured hybrid ARQ retransmission; recoded data packet; symbol retransmission; Automatic repeat request; Bandwidth; Blind equalizers; Channel estimation; Cross layer design; Decoding; Error correction codes; Higher order statistics; Physical layer; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2004. WCNC. 2004 IEEE

ISSN

1525-3511

Print_ISBN

0-7803-8344-3

Type

conf

DOI

10.1109/WCNC.2004.1311409

Filename

1311409