Constellation rearrangement for ARQ transmit diversity schemes

Details Constellation rearrangement for ARQ transmit diversity schemes Constellation rearrangement for ARQ transmit diversity schemes

2006-12-26

2006-12-26

Ghebretinsae, Temesghen (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S299000, C375S298000, C370S349000, C714S748000

Reexamination Certificate

active

07154961

ABSTRACT:
An ARQ (re-) transmission method of transmitting data in a wireless communication system wherein data packets are transmitted from a transmitter to a receiver, using a first transmission and a second transmission based on a repeat request. The method comprises the steps of modulating data at the transmitter using a first signal constellation pattern to obtain a first data symbol. The first data symbol is transmitted as the first transmission to the receiver using a first diversity branch. Further, the data is modulated at the transmitter using a second signal constellation pattern to obtain a second data symbol. Then, the second data symbol is transmitted as the second transmission to the receive over a second diversity branch. Finally, the received first and second data symbol data symbol are diversity combined at the receiver. The invention further relates to a transmitter and a receiver embodied to carry out the method of the invention.

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Chinese Office Action dated Mar. 3, 2006 with English translation.

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