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Tackling timing offsets when separating co-channel signals

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3 Author(s)
Kannan, A. ; Dept. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA ; Krauss, T.P. ; Zoltowski, M.D.

In this paper, we propose a method for obtaining a resynchronized symbol rate sampled co-channel signal from a sum of suitably oversampled co-channel signals which have the same data clock but are not necessarily exactly time-aligned. The method works by estimating the relative timing offsets of the data clocks of the different up-link signals and using them to design a bank of filters operating at symbol rate whose outputs can be added to give a resynchronized signal. The filters can be designed to minimize the noise gain as well as force this signal to adhere to a signal model used very often in co-channel signal separation methods

Published in:

Signal Processing Advances in Wireless Communications, 1999. SPAWC '99. 1999 2nd IEEE Workshop on

Date of Conference:

1999