REDUCED-COMPLEXITY MAXIMUM LIKELIHOOD MIMO RECEIVER

• Main Authors: LEACH, MARTIN GEOFFREY, ZIELINSKI, ERNST SLAWOMIR
• Format: Patent
• Language: English; French
• Published: 19.05.2014
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

A method of performing maximum likelihood detection on spatially-multiplexed streams in a multiple-input multiple-output (MIMO) communication system, the method comprising: receiving plurality of received signals at a plurality of receiver antennas, the plurality of received signals corresponding to a plurality of transmit symbols, each transmit symbol being one of a number M possible symbols, for each of a value k = 1 to M: select a first stream candidate symbol, for each receiver antenna, calculate a residual signal, combine said calculated residual signals, select a second stream candidate symbol for said value k based on the result of said combination to form a symbol pair comprising said first stream candidate symbol and said second stream candidate symbol; and calculate a corresponding distance metric for said symbol pair for said value k, selecting one of the symbol pairs based on said calculated distance metrics.