Power-efficient channel condition feedback for OFDM channels

Details Power-efficient channel condition feedback for OFDM channels Power-efficient channel condition feedback for OFDM channels

2008-05-20

2011-10-25

Cai, Wayne (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C455S068000, C455S574000, C370S220000, C370S221000, C370S431000, C370S465000

Reexamination Certificate

active

08045535

ABSTRACT:
A wireless device includes a transceiver that receives packets via a wireless channel. A measurement circuit measures a channel condition of the wireless channel when the measurement circuit is in an active state. A controller identifies a request for a channel condition of the wireless channel in a first packet received by the transceiver, transitions the measurement circuit from an inactive state to the active state in response to the request, and transitions the measurement circuit to the inactive state in response to the measurement circuit having completed measuring the channel condition of the wireless channel during processing of a second packet received by the transceiver.

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