CDMA communication system using an antenna array
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United States of America Patent
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Jun 3, 2003
Issued Date -
N/A
app pub date -
Feb 6, 2002
filing date -
Sep 10, 1999
priority date (Note) -
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Abstract
The invention provides for transmission and reception of a data signal using a plurality of transmitting antennas. Each antenna transmits a different reference signal having a pseudo random chip code sequence. A receiver filters each transmitted reference signal using that reference signal's chip code. The filtered reference signals are weighted and combined. Each reference signal's weight is adaptively adjusted in part on a signal quality of the combined signal. A data signal is transmitted such that different spread spectrum versions of the data signal are transmitted from each transmitting antenna. Each version having a different chip code identifier. Upon reception, each version is filtered with its associated chip code. The filtered versions are weighted in accordance with the adjusted weights associated with the reference signal of the respective antenna.
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