Title :
Performance of trellis-coded QPSK/SS systems with long PN sequence combating multiple-access and tone interferences
Author :
Qing Zhang ; Guangguo Bi
Author_Institution :
Dept. of Radio Eng., Southeast Univ., Nanjing, China
Abstract :
Trellis-coded modulation is applied to code division multiple access spread-spectrum (SS) systems where a long pseudonoise (PN) sequence is employed to meet a large number of users. The performance of the trellis-coded QPSK/SS combatting multiple-access and tone interference is analyzed. The results obtained are compared to the conventional SS systems.<>
Keywords :
code division multiple access; interference suppression; phase shift keying; radiofrequency interference; spread spectrum communication; trellis codes; CDMA; TCM; code division multiple access; long PN sequence; multiple-access interference; performance analysis; spread-spectrum systems; tone interference; trellis-coded QPSK/SS systems; trellis-coded modulation; Bismuth; Constellation diagram; Mobile communication; Modulation coding; Multiaccess communication; Multiple access interference; Performance analysis; Quadrature phase shift keying; Spread spectrum communication; System performance;
Conference_Titel :
TENCON '93. Proceedings. Computer, Communication, Control and Power Engineering.1993 IEEE Region 10 Conference on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-1233-3
DOI :
10.1109/TENCON.1993.327928
