MULTIPLE ANTENNA RECEIVER SYSTEM AND METHOD
First Claim
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1. An apparatus for processing signals received on a multiple antenna receiver system (MARS), comprising:
- a switch for selecting one of a plurality of signal paths associated with a respective plurality of antennas, wherein, in operation, the switch is operable to select signal paths such that, over time, signals received from the plurality of antennas are multiplexed to form a single analog signal;
a sampled digital signal processing (DSP) block, coupled to the switch, for processing signals of the signal paths to remove inter-antenna symbol interference (IASI) and inter-symbol interference (ISI).
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Abstract
A technique for processing received signals in multiple-antenna systems. Received signals from the different antennas may be amplified by a Low Noise Amplifier (LNA) and time-multiplexed by a switch to form a single analog signal. The time-multiplexed analog signal is down-converted and processed using a single RF chain for each signal component. This may result in an N-fold decrease in hardware in multiple antenna receiver systems.
114 Citations
20 Claims
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1. An apparatus for processing signals received on a multiple antenna receiver system (MARS), comprising:
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a switch for selecting one of a plurality of signal paths associated with a respective plurality of antennas, wherein, in operation, the switch is operable to select signal paths such that, over time, signals received from the plurality of antennas are multiplexed to form a single analog signal; a sampled digital signal processing (DSP) block, coupled to the switch, for processing signals of the signal paths to remove inter-antenna symbol interference (IASI) and inter-symbol interference (ISI). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for processing signals received on a multiple antenna receiver system (MARS), comprising:
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receiving a plurality of signals from a plurality of antennas, each signal being associated with one of the plurality of antennas; multiplexing the signals from the plurality of antennas into a multiplexed signal; removing inter-antenna symbol interference (IASI) from the multiplexed signal. - View Dependent Claims (17, 18, 19)
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20. A method for processing signals received on a multiple antenna receiver system (MARS), comprising:
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receiving digitized I-signal and Q-signal components, the components having been filtered and produced from an analog signal, wherein the analog signal was formed from a plurality of signals received from a plurality of antennas; recovering the timing, phase, and frequency associated with the I-signal and Q-signal components; equalizing the I-signal and Q-signal components to compensate for inter-antenna symbol interference (IASI) and inter-symbol interference (ISI); space-time processing the I-signal and Q-signal to reproduce the plurality of signals received from the plurality of antennas.
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Specification