Title :
Asymptotic Analysis and Optimization for Generalized Distributed Fountain Codes
Author :
Hanqin Shao ; Dazhuan Xu ; Xiaofei Zhang
Author_Institution :
Coll. of Electron. & Inf. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
A novel generic fountain coding scheme for multiple access networks over erasure channels is proposed and it can be applied to several instances. Moreover, asymptotic analysis using And-Or tree analysis technique is evaluated and an efficient joint optimization method employing linear and nonlinear programs is presented. Furthermore, selective distributed Luby Transform (SDLT) codes and unequal error protection (UEP) codes are evaluated as two special cases. Simulation results reveal that the proposed coding scheme can reduce decoding overhead and provide strong UEP property across sources.
Keywords :
error correction codes; multi-access systems; optimisation; transform coding; tree codes; wireless channels; SDLT code; UEP code; asymptotic analysis; decoding; erasure channels; generalized distributed fountain code; multiple access networks; optimization; optimization method; selective distributed luby transform code; tree analysis technique; unequal error protection codes; Bit error rate; Decoding; Encoding; Error correction codes; Optimization; Relays; Silicon; Asymptotic analysis; LT codes; distributed coding; linear program; nonlinear program; unequal error protection;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2013.040913.130187
