APPARATUS AND METHOD FOR TIME-VARYING CYCLIC DELAY DIVERSITY IN A WIRELESS COMMUNICATION SYSTEM
First Claim
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1. A method for applying a shift in a transmitter of a wireless communication system, the method comprising:
- if there is a signal of an antenna path to be transmitted, determining if a current time corresponds to a preamble zone within a frame; and
if the current time corresponds to the preamble zone within the frame, shifting a partial antenna path signal forward compared to a reference timing and shifting a remaining partial antenna path signal equally or backward compared to the reference timing.
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Abstract
An apparatus and method for Time-Varying Cyclic Delay Diversity (TV-CDD) in a wireless communication system are provided. The method includes, if there is a signal of an antenna path to be transmitted, determining if a current time corresponds to a preamble zone within a frame and, if the current time corresponds to the preamble zone within the frame, shifting a partial antenna path signal forward compared to a reference timing and shifting a remaining partial antenna path signal equally or backward compared to the reference timing.
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Citations
17 Claims
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1. A method for applying a shift in a transmitter of a wireless communication system, the method comprising:
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if there is a signal of an antenna path to be transmitted, determining if a current time corresponds to a preamble zone within a frame; and if the current time corresponds to the preamble zone within the frame, shifting a partial antenna path signal forward compared to a reference timing and shifting a remaining partial antenna path signal equally or backward compared to the reference timing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for applying a shift in a transmitter of a wireless communication system, the apparatus comprising:
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an Inverse Fast Fourier Transform (IFFT) unit for performing an IFFT operation for a signal of an antenna path to be transmitted; and a cycle shift unit for determining if a current time corresponds to a preamble zone within a frame and, if the current time corresponds to the preamble zone within the frame, for shifting a partial antenna path signal among the IFFT operated signals forward compared to reference timing and shifting a remaining partial antenna path signal equally or backward compared to the reference timing. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification