Terahertz (THz) communication is becoming an up-and-coming technology for the future 6G networks as it provides an ultra-wide bandwidth. Appropriate channel models and precoding techniques are essential for supporting the desired coverage and mainly to resolve the severe path loss in THz signals. Initially, the Sub-THz channel (140 GHz) impulse response by using NYUSIM Channel Simulator for 6G indoor office scenario is investigated in this work. The highlight is on Large scale and Small scale parameters like propagation delay and path loss, antenna array gain, etc. The beam split effect is a critical challenge of THz wideband communication.Therefore We have proposed three different THz precoding methodologies like the hybrid precoding, analog beamforming, and the delay-phase precoding to address this challenge.
Multipliers are the obligatory component in most of the Digital Signal Processing applications. Designing high speed and low area multipliers are of substantial research interest. For attaining high speed, the Wallace high-speed multiplier utilizing Wallace tree adders are used predominantly. This paper puts forward the design and implementation of high performance Fused Add-Multiply (FAM) unit constituting 4:2 compressor block. The conventional FAM unit using Modified Booth (MB) multiplier incorporating Wallace tree structure with 3:2 compressor suffered by its performance limitations such as high latency and hardware complexity. The speed of traditional Wallace tree structure can be enhanced by employing 4:2 compressor in the FAM design and it attempts to minimize the stage delays of a conventional design using 3:2 compressor. Therefore an area effective and speed optimized FAM unit is proposed to overcome the bottleneck of conventional design. The analysis of both existing and proposedtechniques are clearly manifested. FAM units are simulated using Modelsim SE 10.0b and implemented in FPGA using Xilinx ISE for performance analysis. Index Terms-Fused Add-Multiply (FAM) unit, 4:2 compressor, Wallace tree structure.
The millimeter-wave multiple input multiple output (MIMO) technology is the frontier for 5G communication systems. This work contributes a large antenna array with a limited number of radio frequency chains using the hybrid beamforming (HBF) technique that overcomes extreme path loss in the mmWave system to improve spectral efficiency. The link budget analysis is given for the target data rate of 11.3 Gbps for the point-to-point communication. The number of antenna elements required for the proposed antenna array is determined via link budget analysis. The proposed system includes single element patch antenna configuration, array factor analysis, and beam steering capability. The transmit and receive antenna gain specifications minimize the path loss and improve the system throughput. Combiners and hybrid precoders are designed together in an iterative way for reducing the cost function of the weighted minimum mean squared(WMMSE) error. Simulation results demonstrate that the proposed HBF algorithm performance is highly effective and performs closer to the fully digital beamforming technique. The proposed large antenna array with HBF uses the New York University Simulator (NYUSIM) to perform omnidirectional and directional power delay profile analysis with the most potent power. The proposed large antenna array with HBF methodology provides an optimal approach to indoor point-to-point communication deployments.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.