Pulse or digital communications – Transmitters
Reexamination Certificate
2008-04-08
2008-04-08
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Transmitters
C375S267000, C455S073000
Reexamination Certificate
active
10691903
ABSTRACT:
An apparatus uses transmission antenna diversity to compensate for fading. An encoder according to a first embodiment forms 4 combinations each including 3 symbols so that 4 input symbols should be transmitted only once at each antenna and each time interval, and delivers the combinations to the 3 transmission antennas for 4 time intervals, and two or more symbols selected from the 4 input symbols are phase-rotated by predetermined phase values before being transmitted via the transmission antennas. An encoder according to a second embodiment forms 3 combinations each including 3 symbols so that 3 input symbols should be transmitted only once at each antenna and each time interval, and delivers the combinations to the 3 transmission antennas for 3 time intervals, and two or more symbols selected from the 3 input symbols are phase-rotated by predetermined phase values before being transmitted via the transmission antennas. In this way, the apparatus secures a maximum diversity order and copes with fast fading by reducing transmission latency.
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Chung Jae-Hak
Hwang Chan-Soo
Kim Yung-Soo
Nam Seung-Hoon
Ghayour Mohammed
Samsung Electronics Co,. Ltd
The Farrell Law Firm PC
Williams Lawrence
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