Title :
Turbo coded modulation for high-throughput TDMA systems
Author :
Papadimitriou, Panayiotis D. ; Varshney, Prabodh
Author_Institution :
Nokia Mobile Phones, Irving, TX, USA
Abstract :
A high level modulation (8-PSK) was introduced in the evolution of GSM or EDGE. Using this modulation the maximum data throughput which can be achieved in the EGPRS protocol is 473.6 kbps. For the next generation of mobile communications there is a demand for systems capable of achieving even higher data rates (1-10 Mbps). We proceed to the application of 16/64 QAM modulation, combined with strong coding schemes like turbo codes in order to achieve even higher throughput. The channels considered here are the AWGN and the one-path Rayleigh. Besides the evaluation of the system (through simulations), extensive comparisons with the same system employing convolutional codes of equivalent complexity have been performed
Keywords :
AWGN channels; Rayleigh channels; access protocols; cellular radio; convolutional codes; modulation coding; multiuser channels; phase shift keying; quadrature amplitude modulation; time division multiple access; turbo codes; 1 to 10 Mbit/s; 16QAM; 473.6 kbit/s; 64QAM; 8-PSK; AWGN channels; EDGE; EGPRS protocol; GSM; Rayleigh channels; convolutional codes; data rates; high level modulation; high-throughput TDMA systems; maximum data throughput; mobile communications; simulations; turbo coded modulation; turbo codes; AWGN; Convolutional codes; GSM; Mobile communication; Modulation coding; Protocols; Quadrature amplitude modulation; Throughput; Time division multiple access; Turbo codes;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944615
