Title :
ICARE, VICASSO, ACCELAN, MUSYCA: an innovative family of DSSS/CDMA ASICs for implementing DSSS/CDMA transceivers
Author :
Lequepeys, J.R. ; Ouvry, L. ; Des Noes, M. ; Lattard, D. ; Varreau, D. ; Danièle, N. ; Piaget, B. ; Noguet, D. ; Laugeois, M. ; Lionti, R.
Author_Institution :
CEA, Centre d´´Etudes Nucleaires, de Grenoble, France
Abstract :
The direct sequence spread spectrum (DSSS) modulation technique has been widely used for a number of years. For point-to-point applications, LETI has proposed the concept of a matched filter receiver able to take into account all the propagation path signals implementing a diversity combining method. The proven interest, in different kinds of environments, of this original architecture had led to the development of a family of flexible ASICs. First this paper describes two ASICs (ICARE and VICASSO), developed in 1999. Then, special attention will be given to the implementation of an asynchronous code division multiple access (CDMA) receiver. The advanced CDMA architecture developed is based on co-channel interference cancellation (IC) schemes, which meanwhile have better performance than conventional detectors and are particularly attractive for hardware implementation. Finally, this article will focus on a synchronous CDMA receiver architecture
Keywords :
CMOS digital integrated circuits; application specific integrated circuits; cochannel interference; code division multiple access; digital signal processing chips; interference suppression; matched filters; radio links; radio receivers; spread spectrum communication; transceivers; ACCELAN; DSSS/CDMA ASICs; DSSS/CDMA transceivers; ICARE; LETI; MUSYCA; VICASSO; co-channel interference cancellation; direct sequence spread spectrum modulation technique; diversity combining method; hardware implementation; matched filter receiver; performance; point-to-point applications; propagation path signals; synchronous CDMA receiver architecture; Code division multiplexing; Detectors; Diversity methods; Diversity reception; Hardware; Interchannel interference; Interference cancellation; Matched filters; Multiaccess communication; Spread spectrum communication;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2000 IEEE Sixth International Symposium on
Conference_Location :
Parsippany, NJ
Print_ISBN :
0-7803-6560-7
DOI :
10.1109/ISSSTA.2000.876484
