Fractionally spaced equalization of linear polyphase channels andrelated blind techniques based on multichannel linear prediction

Authors:
C.B. Papadias;D.T.M. Slock
Affiliations:
Lucent Technol., AT&T Bell Labs., Holmdel, NJ;-
Venue:
IEEE Transactions on Signal Processing
Year:
1999

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Abstract

We consider the problem of linear equalization of polyphase channels and its blind implementation. These channels may result from oversampling the single output of a transmission channel or/and by receiving multiple outputs of an antenna array. A number of previous contributions in the field of blind channel identification have shown that polyphase channels can be blindly identified using only second-order statistics (SOS) of the output. In this work, we are mostly interested in the blind linear equalization of these channels. After some elaboration on the specifics of the equalization problem for polyphase channels, we show how optimal settings of various well-known types of linear equalization structures can be obtained blindly using only the output's SOS by using multichannel linear prediction or related techniques