Channel aware HARQ scheme based on LDPC codes for land mobile satellite communication system

Yongli Yang; Guangxi Zhu; Desheng Wang; Lifen Wu

doi:10.1117/12.773604

10 November 2007 Channel aware HARQ scheme based on LDPC codes for land mobile satellite communication system

Yongli Yang, Guangxi Zhu, Desheng Wang, Lifen Wu

Proceedings Volume 6795, Second International Conference on Space Information Technology; 679516 (2007) https://doi.org/10.1117/12.773604
Event: Second International Conference on Spatial Information Technology, 2007, Wuhan, China

Abstract

In this paper, a channel aware HARQ (CA-HARQ) scheme based on data punctured rate compatible LDPC (DP-LDPC) codes, which might satisfy the demand for bandwidth and rate in land mobile communication system, is proposed. The scheme is based on type II HARQ technique cooperated with a DP- LDPC code. In the proposed scheme, the effective rate of the LDPC code is adapted according to the channel quality information (CQI) estimated at the receiver, so as to decrease the redundancy when the channel is good and vice versa, the retransmitted blocks are combined with the previous information transmitted to achieve high probability of successful decoding. In this paper, we use a 2-bit CQI feedback scheme. Simulation results, which based on a land mobile satellite channel, show that the proposed channel aware H-ARQ scheme based on DP-LDPC codes improved the throughput by 0.4dB at low SNR compared to a pure DP-LDPC type II HARQ, and it can also be an effective solution to compensate rain attenuation and multipath fading in land mobile satellite systems.

Citation Download Citation

Yongli Yang, Guangxi Zhu, Desheng Wang, and Lifen Wu "Channel aware HARQ scheme based on LDPC codes for land mobile satellite communication system", Proc. SPIE 6795, Second International Conference on Space Information Technology, 679516 (10 November 2007); https://doi.org/10.1117/12.773604

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available