Citation
Abstract
This article introduces the notion of uncoded, partially overlapped, staggered quadrature raised-cosine modulation (SQORC-P) as well as that of a trellis-coded form that is implemented as a specific embodiment of the recently introduced crosscorrelated trellis-coded quadrature modulation (XTCQM). Consideration is given to the power spectral density (PSD) of the scheme over both linear and nonlinear channels as well as to its average bit-error probability (BEP) performance on an additive white Gaussian noise (AWGN) channel, the latter being characterized in terms of tight upper and lower bounds. It is shown that a continuously variable trade-ofi (as a function of the fractional overlap parameter, 0 • fi • 1) between the rate of spectral roll-ofi and the amount of envelope fluctuation of the transmitted signal is achievable with a receiver average BEP performance that is virtually independent of the value of fi and nominally equivalent to that of uncoded quadrature-phase-shift keying (QPSK).
Keywords
Details
- Volume
- 42-136
- Published
- February 15, 1999
- Pages
- 1–16
- File Size
- 467.8 KB