During the last decade there has been tremendous growth in wireless communication, with focus on broadband wireless LAN and mobile phones. To meet the demand for faster wireless access there is a need to change from the traditional Single-Input-Single Output (SISO) antenna systems. There has been significant progress in recent times in developing systems that use multiple antennas at the transm...

Symbiotic radio (SR) backscatter is a possible low-power wireless communication technique for future Internet of Things devices. In this letter, multiple-input-multiple-output (MIMO) SR system proposed, where the secondary multi-antenna transmission from device (BD) to receiver riding on primary transmitter receiver. We investigate beamforming design optimization problem which maximizes sum cap...

The ongoing work in WCDMA standardization (e.g. High Speed Downlink Packet Access work item in 3GPP) evaluates Multiple-Input Multiple-Output (MIMO) transmission schemes involving multiple antennas in both the base station and the terminal. In this paper we consider both orthogonal and non-orthogonal space-time transmission concepts where one or two parallel M-QAM modulated symbol streams are t...

-The data rates and the supported range in communication systems, can be increased using MIMO (Multiple input and multiple output) technique. MIMO technique uses multiple antennas at both transmitter and receiver. MIMO systems uses Orthogonal frequency division multiplexing (OFDM) technique for multicarrier modulation. QR decomposition (QRD) is the first step in the decoding of the MIMO receive...

In this paper, orthogonal space-time block codes (OSTBC) are considered for investigating impact of receive antenna selection on the capacity and error probability analysis of multiple-input multiple-output (MIMO) systems. The results are compared with and without antenna selection of 2X2 and 2X4 MIMO systems. Achieved capacity with receive antenna selection for r T N N ≥ has been found close t...

Multiple input multiple output-orthogonal frequency division multiplexing-code division multiplexing (MIMO-OFDM-CDM) techniques are considered to improve the link reliability/spectral efficiency of very high data rate communication systems. In particular, lattice-reduction-aided receivers are proposed for MIMO-OFDM-CDM systems. Simulation results show that the proposed receivers significantly o...