Signal processing apparatus and method in multi-input/multi-output communications systems
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United States of America Patent
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Dec 7, 2010
Grant Date -
Oct 6, 2005
app pub date -
Mar 31, 2005
filing date -
Apr 2, 2004
priority date (Note) -
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Abstract
A signal processing apparatus in a multi-input/multi-output (MIMO) communication system includes a transmitting end in which a code rate is differently set and a respectively different modulation method is performed at each antenna in consideration of a channel situation of each transmission antenna, coded bits are separately interleaved, and then collectively interleaved to transmit data, and a receiving end in which received data is collectively deinterleaved and then decoded and deinterleaved separately according to each reception antenna, and a channel situation of each signal received from multiple transmission antennas is estimated and fed back to the transmitting end. A different coding rates and modulation method are used at each transmission antenna and the spatial interleaving is performed to obtain a diversity gain in a space domain, and thus, the communication quality can be enhanced.
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