Continuous phase modulation: Difference between revisions

Revision as of 20:22, 3 June 2006

Revision as of 15:25, 22 September 2006

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Therefore, CPM is attractive because the phase continuity yields high spectral efficiency, and the constant-envelope

yields excellent power efficiency. The primary drawback is the high implementation complexity required for an optimal receiver.

== Phase Memory ==

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This requires a Maximum Likelihood Sequence Estimator (MLSE), which is efficiently implemented using the

[[Viterbi algorithm]].

== Phase Trajectory ==

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One extremely popular form of partial-response CPM is

[[GMSK]], which is used by [[GSM]] in most of the world's 2nd generation cell phones. It is also used in [[802.11]] FHSS, [[Bluetooth]], and many other proprietary wireless modems.

{{Uncategorized|September 2006}}