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Novel trellis-coded sequence and phase modulation for DS/SS system

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2 Author(s)
Zhang, Q. ; Dept. of Radio Eng., Southeast Univ., Nanjing, China ; Bi, G.

A novel trellis-coded sequence and phase modulation (SPM) scheme is presented for the direct sequence spread spectrum (DS/SS) system. As an example, the combined two sequence and four phase-shift-keying (2-S/4-PSK) modulation scheme is described and analysed. It is shown that the trellis-coded SPM can obtain an additional gain of 1.1-1.2 dB over coded MPSK modulation

Published in:

Electronics Letters  (Volume:30 ,  Issue: 11 )