152 research outputs found
Finite Length Analysis of Irregular Repetition Slotted ALOHA in the Waterfall Region
A finite length analysis is introduced for irregular repetition slotted ALOHA
(IRSA) that enables to accurately estimate its performance in the
moderate-to-high packet loss probability regime, i.e., in the so-called
waterfall region. The analysis is tailored to the collision channel model,
which enables mapping the description of the successive interference
cancellation process onto the iterative erasure decoding of low-density
parity-check codes. The analysis provides accurate estimates of the packet loss
probability of IRSA in the waterfall region as demonstrated by Monte Carlo
simulations.Comment: Accepted for publication in the IEEE Communications Letter
Finite Length Analysis of LDPC Codes
In this paper, we study the performance of finite-length LDPC codes in the
waterfall region. We propose an algorithm to predict the error performance of
finite-length LDPC codes over various binary memoryless channels. Through
numerical results, we find that our technique gives better performance
prediction compared to existing techniques.Comment: Submitted to WCNC 201
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