BER analysis of a set of TCM schemes for reducing cochannel interference in cellular mobile communication

Abstract

Scarcity of the frequency band is acting as a bottleneck to the tremendous advancement in the field of mobile communication. Nowadays cellular technology is being invariably employed in mobile communication to maximize the spectral efficiency. Due to the frequency reuse there comes the problem of co-channel interference into the picture, due to which we have to restrict the frequency reuse factor to 7. We have used trellis coded modulation to impose orthogonality in the signal space due to which we have been able to achieve satisfactory performance in terms of CCI at a frequency reuse factor of 4, thus approximately doubling the spectral efficiency. Performance analysis of the system is done. Theoretical predictions are verified through simulations.