Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via frequency channels
Reexamination Certificate
2011-03-08
2011-03-08
Yao, Kwang B (Department: 2473)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via frequency channels
C370S203000, C370S310000, C370S314000, C370S330000, C370S480000, C370S500000
Reexamination Certificate
active
07903691
ABSTRACT:
Provided is a method of generating a pilot pattern capable of perform adaptive channel estimation, and a method and apparatus of a base station and a method and apparatus of a terminal using the pilot pattern. The pilot pattern selects pilot symbol positions based on distances from pilots of previous orthogonal frequency division multiple access (OFDMA) symbols to a subcarrier position of a current OFDMA symbol in the frequency domain and the time domain, so that a low pilot density is maintained so as to effectively transmit data, and stable channel estimation performance can be obtained even in a bad channel environment. In addition, the minimum burst allocation size is determined according to the channel environment between the base station and the terminal, guaranteeing channel estimation performance suitable for the channel environment, and improving granularity, channel estimation latency, and channel estimation memory size.
REFERENCES:
patent: 2005/0002369 (2005-01-01), Ro et al.
patent: 2005/0147024 (2005-07-01), Jung et al.
patent: 2005/0201476 (2005-09-01), Kim et al.
patent: 2006/0146867 (2006-07-01), Lee et al.
patent: 2007/0121538 (2007-05-01), Ode et al.
patent: 2009/0257519 (2009-10-01), Lin et al.
patent: 1 643 669 (2006-04-01), None
patent: 2005-0039263 (2005-04-01), None
patent: 2005-0051865 (2005-06-01), None
patent: 2006-0082228 (2006-07-01), None
International Search Report-mailed Jul. 25, 2007; PCT/KR2007/002004.
Hwang Sung-Hyun
Kim Chang-Joo
Song Myung-Sun
Um Jung-Sun
Electronics and Telecommunications Research Institute
Ladas & Parry LLP
Ngo Nguyen
Yao Kwang B
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