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Details of Grant 

EPSRC Reference: GR/N01699/01
Title: RIGOROUS HIPERLAN/2 PERFORMANCE EVALUATION USING COMBINED COFDM,PRE-FFT EQUALISATION &ADAPTIVE ANTENNAS
Principal Investigator: Nix, Professor A
Other Investigators:
Bull, Professor D Beach, Professor M
Researcher Co-Investigators:
Project Partners:
Defence Science and Technology Laborator Grundig UK Limited
Department: Electrical and Electronic Engineering
Organisation: University of Bristol
Scheme: Standard Research (Pre-FEC)
Starts: 01 March 2000 Ends: 31 August 2002 Value (£): 194,485
EPSRC Research Topic Classifications:
Digital Signal Processing
EPSRC Industrial Sector Classifications:
Electronics Creative Industries
Communications
Related Grants:
Panel History:  
Summary on Grant Application Form
This project aims to investigate and evaluate two major enhancements to the current ETSI Hiperlan/2 air interface, namely pre-FFT equalisation and the use of adaptive antennas.To prevent loss of carrier orthogonality, a guard-time equivalent to 25% of the symbol period is specified in the ETSI standard. Recent PhD research at the University of Bristol has shown that novel pre-FFT Decision Feedback Equalisation can be used to reduced (or even remove) the need for this guard-time. This major enhancement can increase data throughout by up to 10%-20%. Adaptive antennas have also been shown to represent a powerful method for enhancing transmission rates and range as well as reducing interference. Through collaboration with DERA and Grundig, this project aims to analyse the performance improvements offered using an 8-element 5GHz antenna array coupled with a pre-FFT equaliser to remove the need for an inefficient guard-time.To enable meaningful results to be generated, the project will assess these new methods using software simulation coupled with a proven software/hardware transmission system.Through attendance and dissemination at ETSI BRAN, the proposed technical programme will make a significant impact on global standardisation activities in the area of wireless LANs.
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Further Information:  
Organisation Website: http://www.bris.ac.uk