A comparison of two systems for downlink communication with base station antenna arrays

1999 ◽  
Vol 48 (5) ◽  
pp. 1356-1370 ◽  
Author(s):  
P. Zetterberg
Keyword(s):  
Antenna Arrays ◽  
Base Station ◽  
Two Systems

scholarly journals Suppression of Cross-Band Scattering in Interleaved Dual-Band Cellular Base-Station Antenna Arrays

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 222486-222495
Author(s):  
Hai-Han Sun ◽  
Bevan Jones ◽  
Y. Jay Guo ◽  
Yee Hui Lee
Keyword(s):  
Antenna Arrays ◽  
Base Station ◽  
Dual Band

scholarly journals Beamforming Optimization in Internet of Things Applications Using Robust Swarm Algorithm in Conjunction with Connectable and Collaborative Sensors

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 2048 ◽  
Author(s):  
Mohammed Zaki Hasan ◽  
Hussain Al-Rizzo
Keyword(s):  
Internet Of Things ◽  
Antenna Arrays ◽  
Smart Grids ◽  
Network Connectivity ◽  
Base Station ◽  
Node Selection ◽  
Swarm Optimization ◽  
Selection Scheme ◽  
Multihop Relaying ◽  
The Internet Of Things

The integration of the Internet of Things (IoT) with Wireless Sensor Networks (WSNs) typically involves multihop relaying combined with sophisticated signal processing to serve as an information provider for several applications such as smart grids, industrial, and search-and-rescue operations. These applications entail deploying many sensors in environments that are often random which motivated the study of beamforming using random geometric topologies. This paper introduces a new algorithm for the synthesis of several geometries of Collaborative Beamforming (CB) of virtual sensor antenna arrays with maximum mainlobe and minimum sidelobe levels (SLL) as well as null control using Canonical Swarm Optimization (CPSO) algorithm. The optimal beampattern is achieved by optimizing the current excitation weights for uniform and non-uniform interelement spacings based on the network connectivity of the virtual antenna arrays using a node selection scheme. As compared to conventional beamforming, convex optimization, Genetic Algorithm (GA), and Particle Swarm Optimization (PSO), the proposed CPSO achieves significant reduction in SLL, control of nulls, and increased gain in mainlobe directed towards the desired base station when the node selection technique is implemented with CB.

scholarly journals Multi-Backup Beams for Instantaneous Link Recovery in mmWave Communications

Electronics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1145 ◽  
Author(s):  
Adel Aldalbahi
Keyword(s):  
Antenna Arrays ◽  
Mobile Station ◽  
Base Station ◽  
Main Beam ◽  
Spatial Direction ◽  
Multiple Beams ◽  
Beamformer Design ◽  
Recovery Scheme ◽  
Recovery Times ◽  
Millimeter Wave Communications

In this paper, a novel link recover scheme is proposed for standalone (SA) millimeter wave communications. Once the main beam between the base station (BS) and the mobile station (MS) is blocked, then a bundle-beam is radiated that covers the spatial direction of the blocked beam. These beams are generated from an analog beamformer design that is composed of parallel adjacent antenna arrays to radiate multiple simultaneous beams, thus creating an analog beamformer of multiple beams. The proposed recovery scheme features instantaneous recovery times, without the need for beam scanning to search for alternative beam directions. Hence, the scheme features reduced recovery times and latencies, as opposed to existing methods.

Sign in / Sign up

Export Citation Format

Share Document