In a multi-user communication system, a pre-coder in a transmitter comprises a Discrete
Fourier Transform (DFT) spreader configured to spread reference-signal symbols with …

An OFDM transmitter spreads original data symbols with a complex-valued spreading matrix
derived from a discrete Fourier transform. Spread data symbols are mapped to OFDM …

US6351499B1 - Method and wireless systems using multiple antennas and adaptive control for
maximizing a communication parameter - Google Patents US6351499B1 - Method and …

This application claims priority to copending US provi sional application entitled “Parameter
Estimation for MIMO OFDM Systems,” having Ser. No. 60/286,130, filed on Apr. 24, 2001 …

(57) ABSTRACT A system and method for data detection in a wireless communication
system wherein the system comprises a receiver for receiving spatial-subspace data …

(57) ABSTRACT A system and method for transmitting a plurality of input data symbol Sub-
streams over a plurality of spatial-subspace channels of a sub-carrier between a transmitter …

US10200227B2 - Pre-coding in multi-user MIMO - Google Patents US10200227B2 - Pre-coding
in multi-user MIMO - Google Patents Pre-coding in multi-user MIMO Download PDF Info …

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Wallace et al.............. 375,267 6,522,898 B1 2/2003 Kohno et al. WO O2O3568 1, 2002 …

The present invention is directed to antenna (spatial) Signal processing useful in Wireless
communication applications, Such as short-range wireleSS applications. Antenna diversity …

The present invention provides a method and system for preprocessing transmit signals in
spatial multiplexing and diversity systems that include multiple transmit antennae. The …