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Blind multiuser detection in multipath CDMA channels with unknown correlated noise

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2 Author(s)
Buzzi, S. ; Cassino Univ., Italy ; Poor, H.V.

We deal with the problem of blind multiuser detection for DS/CDMA systems operating over fading dispersive channels and in the presence of additive Gaussian noise with unknown temporal correlation function. Such a problem has been addressed by Wang et al. (see ibid. vol.44, p.677-91, 1998 and IEEE Trans. on Circuits and Systems II: Analog and Digital Signal Processing, vol.46, p.886-95, 1999) and solved by employing a receiver with two well-separated antennas, such that the noise is spatially uncorrelated. A new method, which enables blind multiuser detection in correlated noise with just one antenna (and can be thus implemented in mobile transceivers), is here proposed. The effectiveness of the new procedure is tested through computer simulations, and its performance compared to that of the algorithms developed by Wang et al.; numerical results demonstrate that the newly proposed method, while relying on halved hardware resources, incurs a performance loss of few dBs with respect to the two-antennas based procedures

Published in:

Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd  (Volume:5 )

Date of Conference:

2000