Adaptive equalization in TDMA digital mobile radio

In order to properly utilize NB-TDMA (narrow-band time division multiple access) digital mobile radio, it is necessary to remove both frequency-selective fading distortion caused by multipath propagation on the radio path and adjacent channel interference distortion from burst signals. It is suggested that an equalization system which combines a fractional interval equalizer and a decision feedback equalizer can solve this problem. Computer simulation using a six-ray propagation model confirms that waveform distortion and adjacent channel interference distortion can be removed simultaneously using the proposed approach