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This paper describes an adaptive array antenna using a signal processing system which is implemented by a systolic array processor (SAP), SAP-AA. Computer simulations show the behavior of the SAP-AA against multipath fading. The SAP realizes a parallel pipelined processing by regularly placing many SAP cells with identical functions and structures so that it achieves the high throughput rate in the data processing. Also, the SAP has many desirable features for very large-scale integration (VLSI) system design and enables miniaturization, weight reduction, and mass production of the processing equipment. In this paper, first, the SAP-AA is described which realizes the least squares (LS) algorithm based on the QR decomposition for the input data matrix using the Givens rotations. In addition, the fundamental performances of the SAP-AA are studied including both the transient response and the steady-state behavior in multipath signal environments. To date, there has been no report which treats the multipath signal suppression performance of the SAP-AA. Finally, it is concluded from the discussion that the SAP-AA is effective for unwanted signal suppression in a multipath signal environment. [ABSTRACT FROM AUTHOR]

This paper presents an outline of a prototype intelligent link system proposed to combine ‘data transmission’ and ‘data processing’ and its software system. The generative program and its processing scheme are reported in detail. The intelligent link is n pairs of a general-purpose pipe- line processing system. It is an n-stage one- dimensional line of segments which consists of a transmission line and a processor. Each segment processes received data by the programs which tag along with its data. In order to decrease the system processing time and the processor idle time, fewer bits are employed to represent a program for the information transmission. Here we use a transition matrix method to describe transition of the operations in a program. Firsts, we introduce the matrix properties and discuss applications of the matrix representation for generative programs. Secondly, we study how fewer bits can be used to represent a matrix and, as a result, find that less than 70% of the bits required to represent a matrix didrectly suffices in the proposed method. [ABSTRACT FROM AUTHOR]

US-based Air Products and Nippon Steel & Sumikin Pipeline & Engineering Co Ltd (NSPE) in Tokyo have signed an agreement to work together in Japan's developing hydrogen fueling infrastructure market, and are also discussing a long-term marketing and supply relationship agreement. [Copyright &y& Elsevier]