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In a downlink transmission, users can benefit from the high capacity gain achieved by transmitting independent data streams from multiple antennas to multiple users sharing the same physical time-frequency resources. This technique is known as multiuser MIMO (MU-MIMO). However, performance of MU-MIMO is sensitive towards propagation imperfections, such as time dispersion and inter-stream interference...
Underlining the viability of multiuser (MU) MIMO for future wireless communications as long term evolution (LTE), we propose in this paper a precoding strategy based on the low resolution LTE precoders which necessitates 2 bits feedback from the user equipment (UE). The proposed strategy encompasses geometrical interference alignment at eNodeB (LTE notation for base station) followed by the exploitation...
Although many researchers have written about OFDMA transmission system, it needs more attention and analysis in next generation wireless networks. This paper is aimed at studying the performance analysis of OFDMA in WiMAX IEEE 802.16m and 3GPP LTE Advanced systems Communication in hybrid environment systems. This study further focuses on Downlink and Uplink models. Finally, it summarizes simulation...
Cooperative MIMO is a key technology for next generation mobile communications. This technique is used to improve cell edge throughput performance. In this paper, we propose a cooperative MIMO scheme with FFR, and evaluate downlink performance of the scheme. We use 3 sector structures per cell. The sector cell is divided into two regions, inner cell and outer cell. The frequency reuse factor (FRF)...
The performance of multiple-input multiple-output wireless systems is investigated in the presence of statistical queueing constraints. Queuing constraints are imposed as limitations on buffer violation probabilities. The performance under such constraints is captured through the effective capacity formulation. A detailed analysis of the effective capacity is carried out in the low-power and wideband...
This paper gives a review of important aspects and current developments in 60 GHz broadband communication. We present channel measurement results for a conference room and analyze the channel capacity. The results clearly demonstrate the capability of the 60 GHz approach. Finally, we outline a concept for a wireless 60 GHz in-flight entertainment system.
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