Paper Info
Title
Performance analysis of incremental redundancy type hybrid ARQ for finite-length packets in AWGN channel.
Abstract
We evaluate a hybrid automatic repeat request (HARQ) scheme adopting incremental redundancy (IR) type under a finite-length codeword condition in AWGN channels. In the IR-type HARQ scheme, a long codeword is divided into L blocks, so that L becomes the maximum number of HARQ rounds. Although a finite-length codeword has a transmission rate loss from the channel capacity, IR-type HARQ schemes can significantly reduce the loss due to an early-termination effect. We find the sub-optimal coding rate of a codeword for given parameters such as signal-to-noise ratio (SNR), error probability constraint, and L. In addition, we scale the gap between the channel capacity and the average transmission rate of the IR-type HARQ and show that the gap decreases in the order of 1/L when a specific condition is satisfied while the gap of the non-HARQ case decreases in the order of 1/root L.
Year
DOI
Venue
2013
10.1109/GLOCOM.2013.6831379
IEEE Global Communications Conference
Keywords
Field
DocType
Incremental redundancy,AWGN,finite-length packet
Hybrid automatic repeat request,Code rate,Communication channel,Algorithm,Real-time computing,Error detection and correction,Theoretical computer science,Code word,Decoding methods,Channel capacity,Additive white Gaussian noise,Mathematics
Conference
ISSN
Citations 
PageRank 
2334-0983
8
0.59
References 
Authors
6
3
Name
Order
Citations
PageRank
Seong Hwan Kim133431.76
Dan Keun Sung21478147.84
Tho Le-Ngoc32210237.14