Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2002-10-15
2009-08-11
Gesesse, Tilahun (Department: 2618)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S203000, C370S342000
Reexamination Certificate
active
07573852
ABSTRACT:
A transmitting/receiving apparatus and method for packet retransmission in a mobile communication system. Upon request for a retransmission from a receiver, a transmitter inverts initially transmitted coded bits if the retransmission is odd-numbered for the same data, modulates the inverted bits, and transmits the modulated bits to the receiver. Then the receiver recovers the coded bits by demodulation. If the coded bits are retransmitted an odd number of times, the receiver decodes the coded bits after inversion. Thus the error probabilities of initial transmission bits and retransmission bits are averaged in effect and decoding performance is improved.
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Kim Hun-Kee
Kim Noh-Sun
Moon Yong-Suk
Yoon Jae-Seung
Gesesse Tilahun
Samsung Electronics Co,. Ltd
The Farrell Law Firm, LLP
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