MR. ROBERT JOSEPH HEATH, MA
Marriage and Family Therapists at 12 St, Oakland, CA

6067290, May 23, 2000

Jul 30, 1999

9/364146

Arogyaswami J. Paulraj - Stanford CA
Robert W. Heath - Hayward CA
David J. Gesbert - Mountain View CA

Gigabit Wireless, Inc. - Mountain View CA

H04Q 728, H04B 7216, H04B 7185, H03D 322

370329

The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A wireless cellular network for transmitting subscriber datastream(s) to corresponding ones among a plurality of subscriber units located within the cellular network is disclosed. The wireless cellular network includes base stations and a logic. The base stations each include spatially separate transmitters for transmitting, in response to control signals, selected substreams of each subscriber datastream on an assigned channel of a multiple access protocol. The logic communicates with each of the base stations. The logic assigns an available channel on which to transmit each subscriber datastream. The logic routes at least a substream of each datastream to at least a selected one of the base stations.

6298092, Oct 2, 2001

Jun 2, 2000

9/585948

Robert W. Heath - Hayward CA
Arogyaswami J. Paulraj - Stanford CA

Iospan Wireless, Inc. - San Jose CA

H04B 706, H04B 708

375267

The present invention provides a method for controlling a communication parameter in a channel through which data is transmitted between a transmit unit with M transmit antennas and a receive unit with N receive antennas by selecting from among proposed mapping schemes an applied mapping scheme according to which the data is converted into symbols and assigned to transmit signals TS. sub. p, p=1. . . M, which are transmitted from the M transmit antennas. The selection of the mapping scheme is based on a metric; in one embodiment the metric is a minimum Euclidean distance d. sub. min,rx of the symbols when received, in another embodiment the metric is a probability of error P(e) in the symbol when received. The method can be employed in communication systems using multi-antenna transmit and receive units of various types including wireless systems, e. g. , cellular communication systems, using multiple access techniques such as TDMA, FDMA, CDMA and OFDMA.