Method and apparatus for frequency synchronization in MIMO-OFDM wireless communication systems
First Claim
1. A method for synchronizing in the receiver of an orthogonal frequency division multiplexing (OFDM) wireless communication system where the OFDM transmitter inserts training symbols in transmission signals, said method comprising the steps of:
- receiving a OFDM transmission;
developing a weighted representation of the received signal performing frequency synchronization of the received signal using the developed weights.
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Accused Products
Abstract
A method and apparatus for synchronizing in the receiver of an orthogonal frequency division multiplexing (OFDM) wireless communication system, and in particular a multiple input multiple output (MIMO) OFDM system. The OFDM transmitter inserts training symbols into the transmission signals, and when the transmission is received a frequency synchronization module develops from them a weighted representation of the received signal from which frequency offset estimates for use in frequency offset compensation may be made.
50 Citations
18 Claims
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1. A method for synchronizing in the receiver of an orthogonal frequency division multiplexing (OFDM) wireless communication system where the OFDM transmitter inserts training symbols in transmission signals, said method comprising the steps of:
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receiving a OFDM transmission;
developing a weighted representation of the received signal performing frequency synchronization of the received signal using the developed weights. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for the synchronization of wireless transmissions received from an OFDM transmitter, said apparatus comprising:
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at least one antenna for receiving the OFDM transmission signal;
a frequency synchronization module couple to the at least one antenna for developing a weighted representation of the received signal;
a frequency offset compensation module for performing frequency offset compensation on the received signal using the weighted representation developed by the frequency synchronization module. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification