Title :
Propagation delay estimation in asynchronous DS/CDMA using multiple antennas
Author :
Sirbu, Marius ; Koivunen, Visa
Author_Institution :
Signal Process. Lab., Helsinki Univ. of Technol., Helsinki, Finland
Abstract :
This paper addresses the problem of channel and propagation delay estimation in asynchronous DS/CDMA systems. We consider the uplink connection in DS/CDMA with long spreading codes. The MIMO stochastic gradient algorithm proposed in [6] is estimating a linear combination of the channel impulse responses and the propagation delays. This estimate suffices for the equalization purposes. The propagation delays are estimated with a simple matching scheme.
Keywords :
MIMO communication; antenna arrays; channel estimation; code division multiple access; delay estimation; equalisers; gradient methods; spread spectrum communication; stochastic processes; MIMO stochastic gradient algorithm; asynchronous DS/CDMA; channel estimation; channel impulse response estimation; equalization; matching scheme; multiple antenna; propagation delay estimation; spreading codes; Abstracts; Multiaccess communication;
Conference_Titel :
Signal Processing Conference, 2002 11th European
Conference_Location :
Toulouse
