Channel coding for cochannel interference suppression in wireless communication systems
Cochannel interference is a major impairment in cellular systems. In practice the performance of time and frequency division multiple access (TDMA and FDMA) systems is limited by a few dominant cochannel interferers. Conventional channel coding techniques treat this interference as noise to mitigate its effect. In this work it is shown that cochannel interference can be totally suppressed by using a adaptive non-linear decoder. We illustrate our ideas using codes in real (complex) field as well as codes in finite field. The decoding technique can be combined with antenna diversity to offer increased interference suppression capability.