Digital Communications in Fading Channels: COMLINK Validation
Roger A. Dana, Robert L. Bogusch · Defense Technical Information Center (DTIC) · 2000
This report presents validation results for the DSWA communications link simulation code COMLNK. Simulation results are compared with theoretical demodulation error rates for frequency shift keying (FSK) and phase shift keying (PSK) modulation with a wide range of disturbed channel conditions. Our results show excellent agreement of COMLNK simulation results with theoretical error rates. The propagation channels are characterized by the channel impulse response function (CIRF) that has either Rician or Rayleigh first order statistics. The second order statistics of Rayleigh fading channels vary from slow to fast fading and are either fiat or frequency selective fading. New results for the demodulation performance of PSK or FSK links in fast, frequency selective fading are given in the Appendices. The effects of sampling the CIRF, which is necessary in either a simulation such as COMLNK or in hardware channel simulators, are included in fast, frequency selective fading demodulation performance calculations.