Data transmitting method with hybrid automatic repeat...

Details Data transmitting method with hybrid automatic repeat... Data transmitting method with hybrid automatic repeat...

2011-01-04

2011-01-04

Harper, Kevin C (Department: 2462)

Multiplex communications

Communication over free space

Combining or distributing information via frequency channels

C370S465000, C370S480000, C714S746000

Reexamination Certificate

active

07864745

ABSTRACT:
The present invention provides a data transmitting method with hybrid automatic repeat request in multi-carrier system. In this method, the signal-to-noise ratios of respective sub-carriers are compared with a threshold, the data on the sub-carriers having the signal-to-noise ratios lower than the threshold are selectively retransmitted by mapping these data onto the sub-carriers having the good channel conditions, and then the retransmitted data are combined hybrid-automatically in the receiver of the opposite terminal. By using the method the system throughput can be enhanced effectively without impairing the bit error rate of the system.

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