Title :
A new scheme for the coded SSMA systems
Author :
Zhang, Tsing ; Bi, Guangguo
Author_Institution :
Dept. of Radio Eng., Southeast Univ., Nanjing, China
Abstract :
A new scheme for coded spread spectrum multiple access (SSMA) systems is presented. The new scheme employs a four-dimensional modulation which combines the FSK and PSK modulation. The corresponding receiver structure is discussed and a realization method is given. The bandwidth expansion and performance comparisons show that the scheme presented is more attractive over the coded MPSK SSMA systems
Keywords :
frequency shift keying; multi-access systems; phase shift keying; pseudonoise codes; receivers; spread spectrum communication; FSK modulation; PSK modulation; bandwidth expansion; coded SSMA system; coded spread spectrum multiple access; four-dimensional modulation; performance comparisons; realization method; receiver structure; Bismuth; Communication system security; Convolutional codes; Decoding; Euclidean distance; Fading; Frequency shift keying; Phase shift keying; Spread spectrum communication; Viterbi algorithm;
Conference_Titel :
Spread Spectrum Techniques and Applications, 1994. IEEE ISSSTA '94., IEEE Third International Symposium on
Conference_Location :
Oulu
Print_ISBN :
0-7803-1750-5
DOI :
10.1109/ISSSTA.1994.379523
