Data communication at rates near or above 2 kbits/s on 3 kHz-bandwidth HF radio channels is subject to impairment from severe linear dispersion, rapid channel time variation, and severe fading. In this investigation, recorded 2.4 kbit/s QPSK signals received from HF channels were processed to extract a time-varying estimate of the channel impulse response. From the estimated channel impulse responses, performance-related parameters were computed for ideal matched filter reception, maximum-likelihood sequence-estimation (MLSE), and decision feedback equalization (DFE). The results indicated that the simpler DFE receiver suffered only a small theoretical performance degradation relative to the more complex MLSE receiver. Other HF channel impulse response statistics were also obtained to shed light on equalization and filter adaptation techniques.

Additional Metadata
Persistent URL dx.doi.org/10.1109/TCOM.1985.1096310
Journal IEEE Transactions on Communications
Citation
Falconer, D.D, Sheikh, A.U.H., Eleftheriou, E., & Tobis, M. (1985). Comparison of DFE and MLSE Receiver Performance on HF Channels. IEEE Transactions on Communications, 33(5), 484–486. doi:10.1109/TCOM.1985.1096310