EFFECTED ANGULAR SPREAD ON BEAMFORMING AND TRANSMIT DIVERSITY FOR INDOOR AND OUTDOOR
Journal Title: Вісник Національного університету "Львівська політехніка", серія "Радіоелектроніка та телекомунікації" - Year 2014, Vol 796, Issue 2014
Abstract
The implementation of beamforming and spatial diversity in Orthogonal Frequency Division Multiplexing (OFDM) systems reveals challenges in terms of complexity, feedback, and scenario dependencies. In this paper we discuss the differences and limitations of OFDM transmission over scenarios with different angular spread, which can viewed clearly from the base station antenna (BSA), signals departing to or arriving from the UE appear to be spread over a range of angle and evaluate the issues arising from the implementation of beam-forming and spatial diversity in OFDM systems.
Authors and Affiliations
Mushtaq Al-Shuraifi, Haider Al-Zayadi, Ihor Orlevych
Keywords
Related Articles
- EP ID EP459706
- DOI -
- Views 115
- Downloads 0
CHANNEL SELECTION ALGORITHMS PERFORMANCE EVALUATION FOR SPECTRUM DECISION IN COGNITIVE RADIO
Different spectrum decision methods in a Cognitive radio network were analyzed in this paper. The technology of Cognitive Radio networks needs to make a decision which spectrum band is the best among the available free b...
VERTICAL HANDOVER ACCESS SELECTION IN MOBILE SDR SYSTEM
In order to satisfy emerging user requirements in advanced services/applications, provided seamlessly, operators have to deploy complex network topologies of heterogeneous nature, where different Radio Access Technologie...
DATA BUFFERING MULTILEVEL MODEL AT THE MULTISERVICE TRAFFIC SERVICE NODE
Given the bursty behavior of cloud applications described above, an easy solution to the incast problem would be to overdesign buffer capacity at each network node. The basic principles of data buffering at the multiserv...
DISTRIBUTION NETWORK FOR TELECOMMUNICATIONS SERVICES FOR SUBSCRIBERS OF EXPRESS TRAIN
This article describes the new concept of providing multimedia services, which require bandwidth 12 Mbit/sec, for mobile subscribers moving at speed of 250-350 km/h on train express. This concept is called – interactive...
COMPLEX OPTIMIZATION METHOD OF ROUTING INFORMATION FLOWS IN SELF-ORGANIZED NETWORKS
Modified routing algorithms are presented based on basic meta-heuristic algorithms: ant colony optimization, genetic and simulated annealing to determine the best route for information flows in self-organized networks. A...