MIMO symbol detection for SNR higher and lower than a threshold

Details MIMO symbol detection for SNR higher and lower than a threshold MIMO symbol detection for SNR higher and lower than a threshold

2008-08-18

2010-10-05

Odom, Curtis B (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S341000, C375S347000

Reexamination Certificate

active

07809075

ABSTRACT:
A system detects symbols communicated from multiple transmitting antennas to multiple receiving antennas. A first detector determines the symbols from respective partial distances of potential choices for symbols from a constellation. A second detector determines the symbols from respective partial distances of more potential choices. The first and second detectors determine their partial distances from signals received at the receiving antennas. The second detector has a lower bit error rate than the first detector. The potential choices for the second antenna are smaller than the potential choices for the first antenna in response to a signal-to-noise ratio (SNR) being higher than a threshold. An evaluator estimates the SNR of the signals received at the receiving antennas. The evaluator enables the first detector in response to the SNR being lower than the threshold, and the evaluator enables the second detector in response to the SNR being higher than the threshold.

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