Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2008-07-22
2008-07-22
Harper, Vincent P. (Department: 2617)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S320000, C370S310000
Reexamination Certificate
active
07403509
ABSTRACT:
Techniques are described for performing block equalization on a received wireless communication signal formed according to interleaved chips generated from sub-blocks of symbols. For example, a one-step block equalization process is described which produces estimates of the information-bearing symbols from a wireless communication signal received from two or more transmitters in a soft handoff environment. The techniques provide improved performance in high load, soft handoff environments with low complexity, highly flexible equalization. The wireless communication signal may be a CIBS-CDMA signal in which a symbol block is divided into sub-blocks and spread by a user-specific block-spreading matrix. The CIBS signal is received through M subchannels and a de-spreading matrix is applied to produce a multi-user interference (MUI) free sub-block output for the mthchannel. One-step block equalization comprises forming a single block from the m de-spread sub-blocks and performing block equalization on the single block.
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Giannakis Georgios B.
Zhou Shengli
Doan Phuoc
Harper Vincent P.
Regents of the University of Minnesota
Shumaker & Sieffert P.A.
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