Cb. Papadias et Dtm. Slock, Fractionally spaced equalization of linear polyphase channels and related blind techniques based on multichannel linear prediction, IEEE SIGNAL, 47(3), 1999, pp. 641-654
In this paper, we consider the problem of linear equalization of polyphase
channels and its blind implementation. These channels may result from overs
ampling the single output of a transmission channel or/and by receiving mul
tiple outputs of an antenna array. A number of recent contributions in the
field of blind channel identification have shown that polyphase channels ca
n be blindly identified using only second-order statistics (SOS) of the out
put. In this work, we are mostly interested in the blind linear equalizatio
n of these channels: After some elaboration on the specifics of the equaliz
ation problem for polyphase channels, we show how optimal settings of vario
us well-known types of linear equalization structures can be obtained blind
ly using only the output's SOS by using multichannel linear prediction or r
elated techniques.