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This paper presents a 2 × 2 multiple-input-multiple-output over-the-air (MIMO OTA) measurement system with user-programmable, reconfigurable and real-time signal processing field-programmable gate arrays (FPGAs)-based software-defined radio (SDR) capability. Signal generation and analysis as well as channel emulation are all implemented using vector signal transceivers (VSTs). As a demonstration,...
One precoding algorithm used in the downlink of CR MU-MIMO system is presented. Though interference between CUs is not mitigated completely, co-channel interference to PU is pre-whitened and various performance evaluation results demonstrate that algorithm CR-TR-BD accommodates for more general case and is able to achieve high sum rate throughput than BD only used in CR network.
We present a cognitive MIMO wireless communication system with cognitive link and primary link using multiple transmission antennas. Gamma distribution function is used to obtain accurate approximation to signal-to-interference-and-noise ratio (SINR) of cognitive link, and new closed-form expressions of the outage probability are derived in two scenarios. Furthermore, how much influence of detection...
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