Closed loop transmit diversity antenna verification using...

Details Closed loop transmit diversity antenna verification using... Closed loop transmit diversity antenna verification using...

2006-04-25

2006-04-25

Kumar, Pankaj (Department: 2631)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S358000, C375S341000, C375S347000

Reexamination Certificate

active

07035343

ABSTRACT:
A trellis decoder determines the most likely transmitted phase in response to previously requested phase adjustments and observed transmitted symbols. Maximum a posteriori (MAP) decoding also may be used. Alternatively, the identified likely transmitted phase is used for data demodulation. This and related features have the benefit of decreasing the effect of phase discrepancies introduced by erroneous reception of phase adjustment information, resulting in improved error rates, and a corresponding increase in system capacity, data throughput, or both.

REFERENCES:
patent: 5541955 (1996-07-01), Jacobsmeyer
patent: 6377610 (2002-04-01), Hagenauer et al.
patent: 6674707 (2004-01-01), Ogura et al.
patent: 6857101 (2005-02-01), Levy
patent: 6862316 (2005-03-01), Tomisato et al.
patent: 6882690 (2005-04-01), Berggren et al.

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