09130810 is referenced by 5 patents and cites 1191 patents.

OFDM signal communication methods and apparatus are described. In accordance with the invention OFDM signals are generated in the time domain with symbols being mapped to specific points in time. Training symbols may be included in the transmitted OFDM signal to facilitate symbol recovery. An exemplary receiver of the invention receives the OFDM signal from the communications channel, converts it into the frequency domain, and then filters it in the frequency domain to eliminate tones corresponding to other users. The filtered signal free of MAC interference is then converted into the time domain where channel estimation and compensation operations are performed. After channel compensation symbol recovery is performed in the time domain.

Title
OFDM communications methods and apparatus
Application Number
9/931469
Publication Number
9130810 (B2)
Application Date
August 16, 2001
Publication Date
September 8, 2015
Inventor
Junyi Li
Bedminster
NJ, US
Rajiv Laroia
Basking Ridge
NJ, US
Agent
Dalei Dong
Assignee
QUALCOMM Incorporated
CA, US
IPC
H04L 5/02
H04L 5/00
H04L 27/26
H04W 72/02
H03H 7/30
H04B 1/00
H04J 1/00
H04J 11/00
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