Chip-level adaptive equalization supervised by a time-multiplexed common pilot sequence in CDMA systems

The objective of this paper is to propose a reception technique for improving the performance of CDMA systems relative to conventional direct channel reception. The proposed receiver employs a linear adaptive equalizer trained by a time-multiplexed common pilot sequence. The equalizer, which works in fully supervised mode guided by this signal, provides substantial benefits compared to a conventional RAKE-finger receiver. The functional details and performance results of the reception scheme are described. The receiver can be applied to any transmission technique using CDMA, including broadband WCDMA and other systems.