Title :
Upper-bound performance of a wide-band adaptive modem
Author :
Wong, C.H. ; Hanzo, Lajos
Author_Institution :
Dept. of Electr. & Comput. Sci., Southampton Univ., UK
fDate :
3/1/2000 12:00:00 AM
Abstract :
Adaptive modulation is applied in conjunction with a decision-feedback equalizer (DFE) in order to mitigate the effects of the slowly varying wide-band multipath Rayleigh fading channel in a noise-limited environment. An upper-bound mean bit-error rate and bits per symbol performance is introduced for this scheme by utilizing the pseudo signal-to-noise ratio at the output of the DFE in order to switch the modulation schemes on a burst-by-burst basis
Keywords :
Rayleigh channels; adaptive modulation; broadband networks; decision feedback equalisers; error statistics; interference suppression; modems; multipath channels; quadrature amplitude modulation; time-varying channels; DFE; adaptive modulation; bits per symbol performance; decision-feedback equalizer; mean bit-error rate; modulation scheme; noise-limited environment; pseudo signal-to-noise ratio; slowly varying wide-band multipath Rayleigh fading channel; upper-bound performance; wide-band adaptive modem; Amplitude modulation; Bit error rate; Decision feedback equalizers; Filters; Intersymbol interference; Modems; Quadrature amplitude modulation; Signal to noise ratio; Switches; Wideband;
Journal_Title :
Communications, IEEE Transactions on
