Joint MSE channel estimation within the current GSM/EDGE standard

A joint mean square error (JMSE) approach is taken in order to perform channel estimation in a frequency selective fading environment in the downlink. It is intended to provide the basis for joint sequence estimation, such as joint delayed decision feedback sequence estimation (JDDFSE), in the mobile terminal. Up to three quasi-synchronous users are considered, one user of interest and two cochannel interferers. The simulation results indicate that this technique is suited for practical systems, such as the Global System for Mobile Communications (GSM) and its 8-PSK add-on, enhanced data rates for global evolution (EDGE), if the base stations are synchronized, resulting in a delay of only several symbols at the mobile station. Simulation results in mixed GSM/EDGE networks are shown.