Apparatus and method for digital wireless communication

Details Apparatus and method for digital wireless communication Apparatus and method for digital wireless communication

2008-06-17

2009-12-08

Bocure, Tesfaldet (Department: 2611)

Pulse or digital communications

Transmitters

C375S298000, C375S308000

Reexamination Certificate

active

07630455

ABSTRACT:
In a multivalue modulation type with one pilot symbol inserted for every 3 or more symbols, signal points of each one symbol immediately before and after a pilot symbol are modulated using a modulation type different from that for pilot symbols. In this way, it is possible to suppress deterioration of the accuracy in estimating the reference phase and amount of frequency offset by pilot symbols and improve the bit error rate characteristic in the signal to noise ratio in quasi-coherent detection with symbols whose symbol synchronization is not completely established.

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