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A coded quaternary CPM scheme for data exchange over satellite-vehicle/personal communication applications
Description
A coded modulation scheme named "coded QTFM" is proposed for the purpose of satellite-vehicle/personal communication facilities. QTFM is a 4-level continuous phase modulation (CPM) scheme with bandlimiting baseband LPF. Coded QTFM improves the error performance of QTFM tremendously with high coding efficiency (/spl sim/0.9). Block encoding and the maximum likelihood sequence estimation is adopted in the proposed system. A simple (10,9) code improves the bit error rate to almost the same value attained by bandlimited QDPSK with raised cosine filter of roll-off factor /spl alpha/=1. >
Journal
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- Proceedings of VNIS'94 - 1994 Vehicle Navigation and Information Systems Conference
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Proceedings of VNIS'94 - 1994 Vehicle Navigation and Information Systems Conference 187-190, 2002-12-17
IEEE
