Patent Number: 6,298,092

Title: Methods of controlling communication parameters of wireless systems

Abstract: 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.

Inventors: Heath, Jr.; Robert W. (Hayward, CA), Sebastian; Peroor K. (Mountain View, CA), Paulraj; Arogyaswami J. (Stanford, CA)

Assignee: Iospan Wireless, Inc.

International Classification: H01Q 3/26 (20060101); H01Q 1/24 (20060101); H04B 7/04 (20060101); H04L 1/02 (20060101); H04B 7/08 (20060101); H04L 1/00 (20060101); H04B 7/06 (20060101); H04L 1/06 (20060101); H04B 007/06 (); H04B 007/08 ()

Expiration Date: 10/02/2018