Abstract: An apparatus and associated methods to improve diversity gain while preserving channel throughput in a multicarrier communication channel are generally presented.

Abstract: A compensating correction value for adjusting analog signals received from multiple antenna elements takes into account the effects of colored noise, co-channel interference, and inter-sample interference. The method of generating the compensating correction value for analog combining architectures considers the total channel impulse response over a block of time.

Abstract: The present invention provides a diversity transmission system. The diversity transmission system includes a method and system of diversity transmission through a wireless channel formed between multiple transmission antennae of a transceiver and a subscriber unit. The method includes forming a stream of symbols from an incoming data stream. A plurality of the symbols are selected forming a data vector. A maximum delay spread through the wireless channel is determined. The maximum delay spread is generally determined as a multiple of a sample time spacing between elements of the data vector. A plurality of diversity vectors are generated based upon the data vector and the maximum delay spread, each diversity vector includes a plurality of elements. Corresponding elements of the diversity vectors are simultaneously transmitted, each diversity vector transmitted from at least one corresponding antenna of a plurality of spatially separate antennae.

Abstract: A wireless communication system has several antennas that are electronically controlled to form N distinct beams (e.g., directional or sectored beams). Each one of the N beams is periodically measured for signal quality for each mobile subscriber. Signal quality measurement can be based on many known techniques. A computer stores and compares the signal quality measurements. The two (or more) best beams are selected using switches controlled by the computer. The best beams are frequency downconverted, digitized and sent to a combiner which combines the best beams to produce a signal having exceptional quality. The computer compares the signal quality measurements and intermittently updates the switch settings for each subscriber so that the best beams are always used for each subscriber. Optionally, three or more of the best beams are combined in the signal combiner.

Abstract: A method and apparatus for selecting an optimal set of antennas from a plurality of antennas for use by a transmitter and/or receiver having a plurality of RF chains to transmit and/or receive a wireless signal on a wireless link. According to the invention information concerning transmission of wireless signals on the wireless link is determined and an optimal set of antennas from the plurality of antennas is selected based on the information. Thereafter, the RF chains are connected to the optimal set of antennas to permit transmission and/or reception of the wireless signal from the RF chains on the wireless link via the optimal set of antennas. The RF chains correspond in number to the number of antennas in the optimal set of antennas, and the number of antennas included in the plurality of antennas is greater than the number of RF chains.