Uppsala universitet

Combatting Co-Channel Interference in a TDMA System Using Interference Estimates from Adjacent Frames

Erik Lindskog

29th Asilomar Conference on Signals, Systems and Computers,
Pacific Grove, CA, October 30 - November 1, 1995. © 1995 IEEE.

Suppression of co-channel interferers in a TDMA cellular phone system by the use of an antenna array is studied. In particular, the problem of suppressing co-channel interferers that appear outside the training sequence is addressed.

It is observed that if a co-channel interferer is present during the data sequence but not during the training sequence of a frame, then it will be present during the training sequence of an adjacent frame. The interferer plus noise spectrum of adjacent frames is utilized in order to suppress such co-channel interferers.

The effect on the performance is illustrated with an example scenario for the GSM system.

Related publications:
PhD Thesis by Erik Lindskog.
Licentiate Thesis by E Lindskog 1995.
Conference paper in IEEE PIMRC'95, with a more detailed description of the channel model.

Pdf, 228K.

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