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Radar and Signal Processing, IEE Proceedings F

Issue 5 • Date Oct 1988

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Displaying Results 1 - 11 of 11
  • Fourier-Bessel error performance analysis of M-ary QAM signalling through AWGN and cochannel interferences

    Publication Year: 1988, Page(s):450 - 456
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (460 KB)

    Studies have shown that expressions for the error performance analysis of M-ary QAM, in the simultaneous presence of AWGN and cochannel interference (CCI) are in the form of Bessel integrals. These integrals are usually difficult to solve, especially in modulation scheme cases with large alphabet sizes (M>or=64). In this paper the Fourier-Bessel series expansion method is used to solve these integ... View full abstract»

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  • New angle-of-arrival estimator: comparative evaluation applied to the low-angle tracking radar problem

    Publication Year: 1988, Page(s):408 - 420
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1244 KB)

    Examines a new, fast, high-performance angle-of-arrival (AOA) estimator called the QR-based spectrum estimation algorithm, which the authors apply to the low-angle tracking problem in radar. They compare the performance of this algorithm to the more established modern estimators of its kind; namely, the MUSIC and modified FBLP algorithms. This comparison is based on real data collected from an exp... View full abstract»

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  • Simultaneous voice and data transmission in private mobile radio using a narrowband FM channel

    Publication Year: 1988, Page(s):439 - 449
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (920 KB)

    Despite the arrival of cellular radio, private mobile radio (PMR) will continue to be the main provider of mobile communications to a number of important users, particularly in areas outside the main urban centres. The release of Band III for mobile radio services constitutes a significant factor in alleviating the spectrum shortage and should act as a spur for the development of new systems of sp... View full abstract»

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  • Convergence behaviour of the first-order multisampling digital tanlock loop

    Publication Year: 1988, Page(s):457 - 460
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (248 KB)

    The convergence behaviour of the first-order multisampling digital tanlock loop (MSDTL) with phase and frequency step inputs is investigated. The MSDTL yields extended locking range, and reduced steady-state mean and variance of phase error as compared with a conventional DTL. It is shown that as the number of samples taken in one period of the received signal increases, the convergence time of th... View full abstract»

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  • Lossless progressive image transmission by residual error vector quantisation

    Publication Year: 1988, Page(s):421 - 430
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1396 KB)

    A progressive image transmission scheme is presented. This scheme has an iterative structure in which vector quantisation is iteratively applied to the residual error images of previous quantisation and an entropy coder is responsible for coding the final error image. At each stage, a fraction of the image information is transmitted and utilised in reconstructing successive approximations of the i... View full abstract»

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  • Optimum data receivers for low SNR data signals in non-Gaussian noise and intersymbol interference: receiver structures and their performance analysis

    Publication Year: 1988, Page(s):471 - 480
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (704 KB)

    The paper concerns the design of locally optimum data receivers for dispersive non-Gaussian channels. A number of approaches are considered for the optimisation of the receiver when the detection is carried out either on a bit-by-bit or a block basis. A number of interesting receiver structures are shown to result when the design is carried out (a) by assuming the knowledge of adjacent bits (decis... View full abstract»

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  • Two-channel direct-bit detection receiver for 16-PSK modulated signals

    Publication Year: 1988, Page(s):461 - 470
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (672 KB)

    A simple two-channel receiver for 16-PSK modulated signals is proposed and its performance evaluated. Assuming an additive white Gaussian noise interference model, the receiver is shown to be optimum in a minimum bit-error-rate (BER) sense. Using Gray-code mapping and direct detection of individual bits, the overall receiver performance is evaluated as a function of Eb/N0 and... View full abstract»

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  • Estimating the conditional entropy of a digital television signal

    Publication Year: 1988, Page(s):431 - 438
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (552 KB)

    Conditional entropy (or conditional variable-length) coding has been proposed by various authors as a bit-rate reduction method for digital television transmission. Some claims for the effectiveness of the method were based on measurements of picture statistics using limited quantities of source data. The present paper points out the dangers of that approach and presents alternative measurements. ... View full abstract»

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  • Adaptive linear-phase complex filtering algorithms

    Publication Year: 1988, Page(s):481 - 486
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (444 KB)

    Discusses the problem of complex adaptive filtering with linear-phase. By deriving the real version of the Wiener equation subject to the linear-phase constraint, the problem of complex filters can be treated in a real way instead of a complex one. The real modified LMS, RLS, Kalman-type algorithms and steered LMS algorithm are introduced to solve the Wiener equation (the last algorithm is for a s... View full abstract»

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  • Tracking systems for satellite communications

    Publication Year: 1988, Page(s):393 - 407
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1452 KB)

    Satellites in nominally geostationary orbits possess diurnal motion which causes the apparent position of the spacecraft to wander in the sky as seen by an earth station. If uncompensated this causes a variation in the performance of the communications link. The motion of the satellite therefore has to be tracked by the earth station antenna. During the past twenty years or so a considerable amoun... View full abstract»

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  • Asymptotic behaviour of bit error rate for bandpass direct-sequence spread-spectrum modulation systems

    Publication Year: 1988, Page(s):487 - 495
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (556 KB)

    The performance of a direct-sequence spread-spectrum communication system is analysed with emphasis on the probability of error, taking into account the bandwidth limitation introduced by the transmission channel. A detailed analysis of the asymptotic behaviour of the error probability for large values of the spreading ratio is carried out. The related approximate expression is rather simple and t... View full abstract»

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Aims & Scope

The latest version of this title is Radar, Sonar & Navigation, IET.

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