Millimeter-wave MIMO systems have gained increasing traction towards the goal of meeting high data-rate requirements in next-generation wireless systems. The focus this work is on low-complexity beamforming approaches for initial UE discovery such Towards goal, we first note structure optimal beamformer with per-antenna gain and phase control good beamformers phase-only control. Learning these structures mmW fraught considerable complexities as need a non-broadcast system design, sensitivity...

Millimeter-wave MIMO systems are one of the candidate schemes for 5G wireless standardization efforts. In this context, main contributions article three-fold. First, we describe parallel sets measurements at identical transmit-receive location pairs with 2.9, 29 and 61 GHz carrier frequencies in indoor office, shopping mall, outdoor settings. These provide insights on propagation, blockage material penetration losses, key elements necessary system design to make mm-Wave viable practice....

Given the cost and complexity associated with deployment of a large number radio frequency (RF) chains in millimeter wave (mmW) multi-input multi-output (MIMO) systems, this paper addresses question network efficiency considerations for hybrid precoding. We first establish relevance directional precoding structures as low-complexity robust solution to meet data rate demands single-user MIMO systems relative more complex less eigen-mode-based structures. Key is sparsity mmW channel coupled...

The focus of this paper is on beamforming in a millimeter-wave (mmW) multi-input multi-output (MIMO) set-up that has gained increasing traction meeting the high data-rate requirements next- generation wireless systems. For given MIMO channel matrix, optimality with dominant right-singular vector (RSV) at transmit end and matched filter to RSV receive been well-understood. When matrix can be accurately captured by physical (geometric) scattering model across multiple clusters/paths as case...

Wireless networks have been evolving at a frenetic pace to meet the ever increasing demands for higher capacity, lower latency, and massive number of connections. In fifth generation (5G) radio access (RANS), millimeter-wave band are instrumental in achieving such stringent requirements. The network deployment must go through significant densification extremely high demand data traffic. This imposes big challenge architecture as well design fronthaul transport links network. Fronthaul is...

The focus of this work is on cost and complexity- induced rank-constrained precoding for millimeter- wave (mmW) multi-input multi-output (MIMO) systems. higher antenna dimensionality sparse channel structure mmW systems motivate directional schemes over more complex less robust eigen-mode-based schemes. Building a prior that illustrated the superiority in design, robustness performance rank-1 beamformer, considers higher-rank structures It shown precoders continue to enjoy similar properties...

The focus of this paper is on beamforming in a millimeter-wave (mmW) multi-input multi-output (MIMO) set-up that has gained increasing traction meeting the high data-rate requirements next- generation wireless systems. For given MIMO channel matrix, optimality with dominant right-singular vector (RSV) at transmit end and matched filter to RSV receive been well-understood. When matrix can be accurately captured by physical (geometric) scattering model across multiple clusters/paths as case...

In 5G millimeter wave (mmWave) systems, user equipments monitor the quality of beam pair links by measuring reference signal received power (RSRP). This paper considers a proactive management design enabled predicting future RSRP based on past channel measurements. Based generic geometric model, we compute prediction error linear MMSE predictor, and relate to key system parameters, such as maximum Doppler spread periodicity measurement. Our analysis reveals that only when measurement is...

This paper proposes novel designs of line-of-sight multiple-input multiple-output (LOS-MIMO) and a unique sample-level coding scheme for wireless fronthaul (WFH) deployment in Open Radio Access Network (O-RAN) beyond the fifth-generation (5G) systems. The objective these is to achieve high capacity, robustness, ultra-reliability WFH, providing performance comparable fiber-optic solutions. Firstly, by optimizing array configuration parameters, such as aperture size, antenna separation,...

In a previous talk, ‘‘A new adaptive differential microphone array’’ by Elko and Pong, has been introduced that adapts its directivity pattern to the particular acoustic environment provide for good signal-to-noise ratio. There, selected remains more or less constant with respect frequency. this talk an approach is described contains one degree of freedom. The spectrum signals partitioned in uniform subbands different patterns are adaptively chosen each subband. This allows cancel multiple...

The focus of this paper is on beamforming in a millimeter-wave (mmW) multi-input multi-output (MIMO) setup that has gained increasing traction meeting the high data-rate requirements next-generation wireless systems. For given MIMO channel matrix, optimality with dominant right-singular vector (RSV) at transmit end and matched filter to RSV receive been well-understood. When matrix can be accurately captured by physical (geometric) scattering model across multiple clusters/paths as case mmW...

Millimeter-wave multi-input multi-output (mm-Wave MIMO) systems are one of the candidate schemes for 5G wireless standardization efforts. In this context, main contributions article three-fold. 1) We describe parallel sets measurements at identical transmit-receive location pairs with 2.9, 29 and 61 GHz carrier frequencies in indoor office, shopping mall, outdoor settings. These provide insights on propagation, blockage material penetration losses, key elements necessary system design to...