Quotient coding modem

Details Quotient coding modem Quotient coding modem

1997-07-08

1999-07-20

Ghebretinsae, Temesghen

Pulse or digital communications

Transceivers

Modems

375261, 375298, 332103, 329304, H04B 138

Patent

active

059265078

ABSTRACT:
A quotient coding modem comprises a modulator that encodes transmitted symbols by the equation ##EQU1## and a demodulator that decodes received symbols by the equation ##EQU2## where q(t) and q.sub.r (t) are functions of time for transmitted and received symbols s(t) and s.sub.r (t) respectively at time t, P.sub.r (t)=.vertline.q.sub.r (t).vertline..sup.2 is instantaneous received baseband power at time t, .eta. is a function of the two smallest symbol amplitudes, and P.sub.max is peak transmitted power.

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patent: 5586147 (1996-12-01), Kreuzgruber et al.
Technical Report 1729 "Quotient Quadrature Amplitude Modulation (QQAM) for ading Channels", Oct. 1996 M.J. Shensa.

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