Improved algorithm for low-order real digital circular convolution

A new algorithm, based on the minimisation of add and multiply operations, is presented for the computation of low-order real digital circular convolutions.     

New postdetection processing technique for frame synchronisers

A new postdetection processing technique to achieve lock-mode frame synchronisation is described. The method is based on a combination of the minimum-error principle and the conventional window technique. Compared with the performance of existing frame synchronisers the new technique is shown to produce an increased unique-word detection probability and a reduced false alarm probability.     

The Radon transform on a dynamically switched transputer network

Previously reported work resulted in a transputer tree network using thirty tramputers to perform the Radon transform. The Radon transform was used to enhance linear features in noisy synthetic aperture radar images. The work presented here describes modification of the transputer network by the addition of INMOS B004 link switches, and controlling T222 transputer. The tree configuration is replaced such that link switches now dynamically switch between the image data source transputer (farmer) and the transputers which perform the calculations (workers). It is shown that this arrangement is more cost-effective since the worker transputers are all relieved of their data-routing role. The paper Includes a comparison of the previous tree network with the new switched network, and presents results for both techniques.