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Technical Program

Paper Detail

Paper IDD4-S6-T2.2
Paper Title Nested LDPC Codes for Random Access Communication
Authors Yuxin Liu, Michelle Effros, California Institute of Technology, United States
Session D4-S6-T2: Finite Block Length Analysis
Chaired Session: Thursday, 15 July, 23:40 - 00:00
Engagement Session: Friday, 16 July, 00:00 - 00:20
Abstract This paper proposes a nested low-density parity-check (LDPC) code design. Combining this nested LDPC code with the random access coding strategy introduced by Yavas, Kostina, and Effros yields a random access LDPC (RA-LDPC) code for reliable communication in random access communication environments where neither the transmitters nor the receiver knows which or even how many transmitters wish to communicate at each moment. Coordination is achieved using sparse scheduled feedback. Bounds on the finite-blocklength performance of the RA-LDPC code under maximum likelihood (ML) decoding are derived using both error exponent and dispersion style analyses. Results include bounds on the penalty of the RA-LDPC code as a function of the LDPC code densities.