Beamforming for Rotated 3D Multipanel Array Structures for 5G NR MIMO Transmission

Compact massive MIMO antenna array for small 5G base stations

Massive MIMO for 5G

Massive MIMO is the currently most compelling sub-6 GHz physical-layer technology for future wireless access. The main concept is to use large antenna arrays at base stations to simultaneously serve many autonomous terminals, as illustrated in Figure 1. The rich and unique propagation signatures of the terminals are exploited with smart processing at the array to achieve superior capacity. Mass...

MMSE Beamforming for SC-FDMA Transmission over MIMO ISI Channels

We consider transmit beamforming for single-carrier frequency-division multiple access (SC-FDMA) transmission over frequency-selective multiple-input multiple-output (MIMO) channels. The beamforming filters are optimized for minimization of the sum of the mean-squared errors (MSEs) of the transmitted data streams after MIMO minimum mean-squared error linear equalization (MMSE-LE), and for minim...

Non Spherical Microphone Array Structures for 3d Beamforming and Spherical Harmonic Analysis

Decomposition of a soundfield into spherical harmonics is a fundamental problem in acoustic signal processing. This paper shows how to design non-spherical microphone array structures in 3D space to decompose a soundfield into spherical harmonic components. We use the mode limiting property of the Bessel functions and zeros of the associated Legendre functions together with orthoganality of the...

Optimal Array Beamforming for Microwave Power Transmission in Complex Environment

Wireless Power Transfer(WPT) is a popular research field in recent years and can be categorized into three approaches: inductive coupling, laser beaming and microwave power transmission(MPT). MPT system operates at the microwave frequency and transfer the energy over more than a few wavelengths. It has its unique advantages of supplying power to nonaccessible and mobile receivers. The overall e...