Ergebnisse für: Spatial Multiplexing
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In wireless transmissions great capacity gains can be realized by using multiple-input multiple-output (MIMO) systems. We introduce a closed-loop MIMO architecture with linear array signal processing. The novel architecture uses the feedback channel to request a retransmission of signal parts in cri...
Recursive spatial multiplexing (RSM) is a low-complexity closed-loop MIMO architecture for applications without delay limitations which avoids noise enhancement. It uses a retransmission based on the projection of the transmitted signal in the previous frame onto a subspace, whose dimension is selec...
Recursive spatial multiplexing (RSM) is a low-complexity closed-loop MIMO architecture for applications without delay limitations which avoids noise enhancement. It uses a retransmission based on the projection of the transmitted signal in the previous frame onto a subspace, whose dimension is selec...
This book presents the modeling and transmission theory of RF OAM communications. The book features the UCA-based RF point-to-point OAM communication system, the UCA-based RF point-to-multipoint OAM wireless backhaul network, the HCCL structure for long-distance OAM transmissions, and the UCA-based ...
This book presents a thorough examination of index modulation, an emerging 5G modulation technique. It includes representative transmitter and receiver design, optimization, and performance analysis of index modulation in various domains. First, the basic spatial modulation system for the spatial do...
Orthogonal frequency division multiplexing (OFDM) is applied in many wireless communication standards for broadband data transmission, as it transforms the dispersive channel into a set of parallel non-interfering channels. Multiple input multiple output (MIMO) systems have become another key ingred...
This thesis is concerned with physical layer signal processing and fundamental performance limits in wireless multiple-input multiple-output (MIMO) multihop networks. Such networks consist of a stage of source antennas, one or several stages of relay antennas and a stage of destination antennas. Si...
This book presents the modeling and transmission theory of RF OAM communications. The book features the UCA-based RF point-to-point OAM communication system, the UCA-based RF point-to-multipoint OAM wireless backhaul network, the HCCL structure for long-distance OAM transmissions, and the UCA-based ...
In this thesis the physical layer design of broadband MIMO-OFDM communication systems is considered taking into account the realistic multipath radio channel. The main focus is made on examining a number of coherent and non-coherent MIMO techniques both analytically and via computer simulations. Sev...
Market trends and user behavior changes lead to dense decentrally organized, interfering network environments. The dense interfering network environments limit user throughput and throughput growth. In such environments, the efficiency of WLANs needs to increase. This thesis discusses selected key t...
This book presents the modeling and transmission theory of RF OAM communications. The book features the UCA-based RF point-to-point OAM communication system, the UCA-based RF point-to-multipoint OAM wireless backhaul network, the HCCL structure for long-distance OAM transmissions, and the UCA-based ...
This book presents a thorough examination of index modulation, an emerging 5G modulation technique. It includes representative transmitter and receiver design, optimization, and performance analysis of index modulation in various domains. First, the basic spatial modulation system for the spatial do...
This book presents a thorough examination of index modulation, an emerging 5G modulation technique. It includes representative transmitter and receiver design, optimization, and performance analysis of index modulation in various domains. First, the basic spatial modulation system for the spatial do...
This book includes some very recent applications and the newest emerging trends of hyper-spectral imaging (HSI). HSI is a very recent and strange beast, a sort of a melting pot of previous techniques and scientific interests, merging and concentrating the efforts of physicists, chemists, botanists, ...