Veitch, D 1993, 'The approach to constrained equations', Physics Letters A, vol. 183, no. 4, pp. 319-326.
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Piccardi, M, De Stefano, L, Cucchiara, R & Cinotti, TS 1970, 'Processing of variable size images on a cellular array: Performance analysis with the Abingdon Cross Benchmark', Proceedings of International Conference on Application Specific Array Processors (ASAP '93), International Conference on Application Specific Array Processors (ASAP '93), IEEE Comput. Soc. Press, pp. 172-175.
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© 1993 IEEE. Handling a continuous flow of variable size images is a requirement for real time computer vision machines. A modular system based on a small size SIMD cellular array of 1-bit processing elements has been developed with this goal in mind and it is now evaluated against the Abingdon Cross Benchmark specifications. The benchmark tests the combination of algorithms and architecture and generates a quality factor expressed as the ratio of the image lateral size and the processing time. The examined machine supports an efficient means to automatically partition, process and reconstruct images larger than the array size. The authors briefly describe the system, discuss the selected algorithms and present performance results and estimates for several system configurations.
van de Groenendaal, JG & Braun, RM 1970, 'Rural communications in multi-path channels: Spread spectrum applications', 1993 IEEE South African Symposium on Communications and Signal Processing, 1993 IEEE South African Symposium on Communications and Signal Processing, IEEE, pp. 167-172.
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© 1993 IEEE. All radio communications occur in channels that have definite multipath characteristics. Two effects that are predominant in such a model, depending on the delay relative to the bit period, are Inter Symbol Interference (ISI) and fading. In this paper ISI is investigated in greater detail and the theoretical error performance for BPSK in a multi-path channel is derived. It is also shown how spread spectrum improves the error performance of BPSK without a "rake" receiver in such an environment and the selection of parameters of spread spectrum to maximize error performance is briefly discussed.
Veitch, D 1970, 'Novel models of broadband traffic', IEEE Global Telecommunications Conference, IEEE, pp. 1057-1061.
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We provide models which are capable of describing the long term correlations and self similar burstiness structure found in recent measurements of packet networks and VBR video. Two families of `fractal' arrival processes are presented which capture these features extremely compactly. We show the equivalence of one of these to processes with unsummable auto-correlation functions used recently to describe long term correlation and burstiness. Our approach however has advantages. The other (1 parameter) family generates burstiness on all time scales. It shows how blocking can occur even for arrival streams with zero arrival rate. This illustrates how parameters describing scaling of burstiness and correlation must replace useless long terms averages.
