Adaptive Minimum Bit Error Rate Beamforming Assisted Detection for QAM Pre-FFT OFDM Communication Systems
Journal Title: International Journal of Research in Computer and Communication Technology - Year 2015, Vol 4, Issue 5
Abstract
A novel adaptive beam forming technique is proposed for broadband wireless communication using quadrature amplitude modulation (QAM) signaling based on least symbol error rate (LSER) criterion, the adaptive antenna array (AAA) is combined with orthogonal frequency division multiplexing (OFDM) which provides better performance to combat intersymbol interference (ISI) and the directional interferences. The proposed design in this paper is for beamforming assisted receiver. The optimum beamformer weight is set in the time domain (pre-FFT) and is obtained based on LSER criteriain a pilot assisted OFDM system in a multipath fading channel. Simulation results show that QAM signaling Based on LSER technique utilizes the antenna array to achieve enhanced performance compared with the standard minimum mean square error MMSE technique because it directly minimizes BER and required shorter training symbols.
Authors and Affiliations
Waleed Abdallah, Mohamad Khdair
Keywords
Related Articles
- EP ID EP28191
- DOI -
- Views 302
- Downloads 2
Replica Allocation over a Mobile Ad Hoc Network
Mobile ad hoc network leads to network partitioning or performance degradation when the mobile nodes mobility occur or less stability of resource contents in it. Researchers developed many methods to minimize the per...
Sprinkling Data :Prevent Pollution Attacks Using Entropy Variation
The Distributed Denial-of-Service (DDoS) attacks are a critical threat to the Internet. Recently there are an increasing number of DDoS attacks against online services and Web applications. However the memoryless fea...
NFC: A review of technology, tags, applications and security
Smart phones are on a course to becoming a need instead of just a want as users are integrating the devices into every aspect of their lives. Smart phones adoption also increases due to the convergence of value-added...
Energy Efficient Full-adder using GDI Technique
A full-adder is one of the essential component in digital circuit design, many improvements have been made to reduce the architecture of a fulladder. The proposed method aims on GDI(Gate Diffusion Input).GDI is a nov...
A Secured Load Balanced Clustering Algorithm for Wireless Sensor Network
Wireless sensor networks are composed of large number of power constrained nodes, which needs an energy conservation protocols to reduce the energy consumption as much as possible. Clustering is a standard approach fo...