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Spatial multiplexing have drawn a lot of attention for many years due to their great potential to achieve high throughput of MIMO systems implemented in wireless communication systems. It is well known that in a single user case the capacity scales linearly with the minimum number of transmit and receive antennas. Many linear precoding techniques require each antenna to transmit its own data. In this...
An experimental verification of wireless power transmission based on distributed retro-reflective beamforming is presented. The wireless power transmitter includes eight antennas well separated in space; they receive pilot signals broadcasted from a mobile device and then jointly deliver radio frequency power to the mobile device. Our experimental results demonstrate that, the distributed retro-reflective...
This paper describes a newly-built broadband multiple input, multiple output (MIMO) channel characterization platform in indoor environment. The platform has been designed for measuring the S21 parameter between M transmitters and N receivers (M<;=8, N<;=8), which enables us to analyze the capacity and the directional multipath of the radio propagation channel. Data has been collected within...
Differential unitary space-frequency modulation reduces the complexity of multiple-input multiple-output-orthogonal frequency division multiplexing (MIMO-OFDM) systems significantly. But the conventional single symbol differential detection (SSDD) results in a high error floor over a severe multipath spreading channel. To overcome this limitation, a multiple symbol differential stack algorithm is...
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