Methods and apparatus for generating and utilizing training codes in a space division multiplexing communication system
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United States of America Patent
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Aug 29, 2006
Grant Date -
Aug 29, 2002
app pub date -
Nov 13, 2001
filing date -
Nov 13, 2000
priority date (Note) -
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Abstract
A communication system is disclosed that comprises first and second communication apparatus. The first communication apparatus is provided with a transmitter for each of the transmission paths, which are capable of sending at least part of a communication signal to the second communication apparatus. The first communication apparatus moreover comprises training mechanisms for generating a training code to be sent to the second communication apparatus enabling a receiver to match a received signal to a corresponding transmitted signal. According to the invention, a training code is used with at least nearly ideal cyclic auto-correlation properties such that its cyclic auto-correction function is at least nearly zero for all cyclic shifts. The transmitter concurrently sends a training code in a mutually shifted manner, while the receiver is capable of performing a cyclic auto-correlation with respect to a received training signal.
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