Title :
Spread-time code division multiple access
Author :
Crespo, Pedro ; Honig, Michael L. ; Salehi, Jawad A.
Author_Institution :
Telefonica I+D, Madrid, Spain
Abstract :
An alternative code division multiple access (CDMA) scheme to spread spectrum (SS), called spread-time (ST), is proposed for bandlimited multiple access channels. ST-CDMA can be considered the time-frequency dual of SS-CDMA. Implementations are described in which surface acoustic wave (SAW) devices are used to perform the matched filtering or Fourier transformation. A first-order comparison of signal-to-interference ratio and spectral efficiency is given for ST- and conventional asynchronous SS-CDMA, assuming an ideal bandlimited channel
Keywords :
code division multiple access; radiocommunication; SAW devices; ST-CDMA; bandlimited multiple access channels; code division multiple access; implementation; radiocommunication; signal-to-interference ratio; spectral efficiency; spread-time CDMA; Acoustic pulses; Bandwidth; Fourier transforms; Interference; Matched filters; Multiaccess communication; Phase modulation; Pulse modulation; Spread spectrum communication; Surface acoustic wave devices;
Conference_Titel :
Global Telecommunications Conference, 1991. GLOBECOM '91. 'Countdown to the New Millennium. Featuring a Mini-Theme on: Personal Communications Services
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-87942-697-7
DOI :
10.1109/GLOCOM.1991.188499
