Time-multiplexed single front-end multiple-input multiple-output receivers with preserved diversity gain

A design technique to realise a low-complexity multiple-input multiple-output (MIMO) receiver using a time-multiplexed single front-end receiver is introduced. The architecture uses a simple front-end receiver where it delivers radio frequency signals to baseband section. The theory behind this architecture is analysed and the diversity gain of the proposed receiver is investigated. This simple MIMO receiver can provide the same diversity gain as the diversity gain of the multiple front-end. Moreover, the experimental studies are conducted to evaluate the diversity gain of the proposed architecture. Excellent agreement between the simulated and measurement results is obtained. The proposed architecture provides a new receiver design technique with lower complexity, power consumption and cost in MIMO systems.