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P. Cherriman, L. Hanzo
Department of Electronics and Computer Science,
University of Southampton, SO17 1BJ, UK.
Tel: +44 703 593125, Fax: +44 703 593045
Email:
lh@ecs.soton.ac.uk
This work has been submitted to the IEEE for possible publication. Copyright may be transferred without notice, after which this version will be superseded.
Completed:22/12/97
The constructive criticism of the anonymous Reviewers is greatly
appreciated.
Submitted for publication in IEEE
transactions on Transactions of Vehicular Technology 1998.
The performance of a power-control algorithm suitable for multi-mode transceivers is investigated using 1, 2 and 4 bit/symbol modems. It is shown that the algorithm is suitable for maintaining a target frame error rate, irrespective of the modulation mode employed. The transceiver parameters are summarised in Table ?, while the minimum and maximum required average transmitted powers in the cell for the different modes are given in Table ?. Given the video bitrates of 4.25-16.9 kbps in the various modem modes, the corresponding average video PSNR improvement of approximately 6dB can be inferred from Figure ?, where the corresponding PSNR values are approximately 32.5, 35 and 38.5 dB, respectively. This PSNR improvement is achievable in cell areas, where the average transmitted power levels of Table ? can be maintained, supporting one of the above legitimate modes of operation of the multimode transceiver.