Transmitter and receiver

Details Transmitter and receiver Transmitter and receiver

2008-01-08

2008-01-08

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Spread spectrum

Frequency hopping

C375S135000, C375S146000, C375S147000, C375S148000, C375S295000, C375S299000, C375S347000, C375S349000

Reexamination Certificate

active

07317747

ABSTRACT:
A receiver informs a delay profile and CIR measured in an FDE or a Rake receiver, together with a bit error rate of a received signal that is required in a receiver, as quality information to a transmitter. In the transmitter, based on the delay profile and CIR contained in the notified quality information, a number of code division multiplex and a frame format are decided in a decision circuit such that a bit error rate of a received signal, which is necessary on the receiver side, can be obtained. In addition, a transmission selection switch selects one of a unique word insertion unit and a cyclic prefix insertion unit that create a frame format for FDE reception and a pilot insertion unit and a complex scrambling unit that create a frame format for Rake reception, and data is then transmitted.

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