Multiple-input, multiple-output cognitive radio

A wireless communication apparatus, comprising:

• a receiver subsystem, coupled to a set of receive antennas, and configured to process a received signal, transmitted over a first wireless channel, to generate a received information signal;
• a transmitter subsystem, coupled to a set of transmit antennas, and configured to process output information and to generate a signal, from the output information, transmittable over a second wireless channel via the set of transmit antennas;
• and
• an adaptive transmission module configured to evaluate at least one condition within a wireless communication environment of the wireless communication apparatus, to identify a set of constraints imposed on transmission of the wireless communication apparatus, and to generate a transmission strategy applicable to the transmissions of the wireless communication apparatus, wherein the transmission strategy represents a response in a strategic, noncooperative game formulation of opportunistic transmission within the wireless communication environment

A computer-readable storage medium having stored thereon computer-executable instructions that, in response to execution, cause a communication device to perform operations, comprising:

• evaluating at least one environmental condition within a wireless communication system to identify interference generated by a plurality of secondary users sharing identical resources with at least one primary user of the wireless communication system;
• determining a set of constraints that represent physical constraints of the communication device and interference limits which can be imposed on the at least one primary user;
• determining a transmission strategy as a response to a noncooperative game formulation of resource competition among the plurality of secondary users in the wireless communication system, wherein the transmission strategy represents an independent action of the communication device without coordination with the plurality of secondary users;
• and
• employing the transmission strategy for data transmissions within the wireless communication system.