Title :
A new coding method for a multiple-access system with a large number of active users
Author :
Frolov, Alexey ; Zyablov, Victor
Author_Institution :
Inst. for Inf. Transm. Problems, Moscow, Russia
fDate :
April 26 2015-May 1 2015
Abstract :
The paper addresses the problem of constructing an asynchronous multiple access system for a multi-user Q-frequency channel with additive white Gaussian noise (AWGN). We propose a coding scheme for the channel which allows a large number of users to work simultaneously in the system. The scheme combines the ideas of Frequency Shift Keying (FSK) and Frequency Hopping Spread Spectrum (FHSS). The major component of the scheme is a non-binary low-density parity-check (LDPC) code. The efficiency of the resulting multiple-access system is shown by simulations.
Keywords :
AWGN channels; channel coding; frequency hop communication; frequency shift keying; multiuser channels; parity check codes; spread spectrum communication; wireless channels; AWGN; FHSS; FSK; active users; additive white Gaussian noise; asynchronous multiple access system; channel coding scheme; frequency hopping spread spectrum; frequency shift keying; multiuser Q-frequency channel; nonbinary LDPC code; nonbinary low density parity check code; Decoding; Encoding; Frequency shift keying; Noise; Parity check codes;
Conference_Titel :
Information Theory Workshop (ITW), 2015 IEEE
Conference_Location :
Jerusalem
Print_ISBN :
978-1-4799-5524-4
DOI :
10.1109/ITW.2015.7133114
