Comparative Study of Pilot Symbol Assissted Modem Schemes


Torrance, J. and Hanzo, L. (1995) Comparative Study of Pilot Symbol Assissted Modem Schemes. In, IEE RRAS'95, Bath, UK, 26 - 28 Sep 1995. , 36-41.

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Description/Abstract

The performance of a range of 1, 2 and 4 bit/symbol pilot symbol assisted modulation (PSAM) [1, 3] arrangements employing first-order linear, low pass, polynomial and optimum higher-order linear interpolation schemes is analysed in contrast to that of the equivalent non-coherent modems. Both the non-coherent modems as well as the coherent PSAM schemes exhibited a residual bit error rate (BER), but the best compromise in terms of performance, system delay and complexity was attributable to the first-order linear interpolator. In case of short interpolation buffers the polynomial interpolator slightly outperformed the low-pass and the higher-order linear optimum interpolators, but this advantage erodd in case of longer buffers. The higher complexity of the minimum mean squared error interpolator is not justifiable in terms of performance improvements. The low-complexity linearly interpolated PSAM schemes have a n improved performance in comparison to the differential schemes in case of higher order constellations, such as 4- and 16-level quadrature amplitude modulation.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Conf. Public. No. 415 Event Dates: 26-28 September 1995 Organisation: IEE Address: Bath, UK
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Comms, Signal Processing & Control
ePrint ID: 258132
Date Deposited: 30 Jul 2003
Last Modified: 27 Mar 2014 20:00
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/258132

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