EFFECT OF NUMBER OF TAPS ON CROSS-POL CANCELLER PERFORMANCE FOR DUAL-POLARIZATION DIGITAL RADIO SYSTEMS.

Document Type

Conference Proceeding

Publication Date

12-1-1987

Abstract

The effect of the number of weights on the performance of an all-transversal cross-pol canceller is considered. As expected, performance improvement occurs when one uses a larger number of taps, particularly when the channel frequency response contains a deep amplitude notch. These improvements are quantified, and the results obtained from many computer simulations over a wide range of notch depths and notch center frequencies are presented and discussed. It is observed that the canceller performs equally well for both minimum-phase and nonminimum-phase notches. It is emphasized that a canceller with only eight weights (a limit imposed by the current IF canceller controller design) is predicted to fall short of the 13-dB cancellation required for satisfactory operation, 10**-**3 BER, of a 64-QAM dual-pol radio having a 10 dB C/I (carrier-to-interference) input to the canceller. A canceller with ten weights might meet this objective.

Identifier

0023591161 (Scopus)

ISBN

[4274031888]

First Page

1239

Last Page

1244

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