Results 1 to 10 of about 49 (39)
Performance Improvement of QPSK Signal Predetection EGC Diversity Receiver
Radioengineering, 2012 This paper proposes a modification of quadrature phase-shift-keying (QPSK) signal diversity reception with predetection equal gain combiner (EGC). The EGC combining is realized by using the constant modulus algorithm (CMA).
B. Nikolic +3 more
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Influence of Frequency Offset on Modified EGC Diversity Receiver [PDF]
Telfor Journal, 2013 In this paper a performance analysis of a modified M-ary phase-shift-keying (MPSK) signal diversity receiver with a predetection equal gain combiner (EGC) will be presented. The modification is in introducing a structure that performs the estimation with
B. Z. Nikolić +3 more
doaj +1 more source
Experimental dual-diversity single-receiver predetection combiner for u.h.f. mobile
IEE Journal on Electronic Circuits and Systems, 1976 An experimental single-receiver diversity combiner is described for use in the u.h.f. mobile-radio band. It is based on a phase-measurement method using a single-sideband-perturbation technique and is applicable to both a.m. and f.m. transmissions. A series of field trials have demonstrated the validity of the principle, as well as the advantages that ...
J D Parsons
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A PREDETECTION DIVERSITY COMBINER
, 1961 Abstract : A two channel, predetection diversity combiner is described. The combiner uses two commercial telemetry receivers as a basis; the necessary subchasses were constructed to (1) combine the expected signal from two antennas to improve the signal-to-noise ratio and (2) measure the relative phase of the signals at the two antennas.
R. A. PARKHURST
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Some of the next articles are maybe not open access.
Error rate performance of dpsk signal in land mobile radio with predetection diversity combiner
Electronics and Communications in Japan, 1980AbstractThe symbol rate of an M‐ary DPSK signal, caused largely by inherent high irreducible error in the delay detection system, will be discussed for the case of applying the diversity‐combining reception under high‐speed Rayleigh fading in land mobile radio systems.
Yoshiya Miyagaki +2 more
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Level Crossing Rates of an Equal-Gain Predetection Diversity Combiner
IRE Transactions on Communications Systems, 1970An M branch equal-gain predetection space-diversity combiner is analyzed for the case where the signals received from the individual branches of such a combiner are partially correlated. The level crossing rate (LCR) of the combined signal envelope equals the probability density function times a function of the direction of motion.
exaly +2 more sources
IRE Transactions on Communications Systems, 1974
The theory of operation of an equal-gain predetection diversity combiner employing the Granlund technique of utilizing a combination of feedback and feedforward is presented. It is shown that the time delays of the filters and the loop phase shifts uniquely determine the operating frequencies within the system. The random FM at the discriminator output
exaly +2 more sources
The theory of operation of an equal-gain predetection diversity combiner employing the Granlund technique of utilizing a combination of feedback and feedforward is presented. It is shown that the time delays of the filters and the loop phase shifts uniquely determine the operating frequencies within the system. The random FM at the discriminator output
exaly +2 more sources
Dynamic response of Granlund predetection diversity combiners
IEEE Transactions on Aerospace and Electronic Systems, 1996A new linearized model is developed for the Granlund combiner that is useful in determining the combiner performance with physically realizable filters and with dynamic variations such as rapid fading and burst signals. The model is tailored for use in determining automatic gain control (AGC) stability.
exaly +2 more sources
Predetection Diversity Combining with Selectively Fading Channels
IEEE Transactions on Communications, 1962The effective use of predetection (or IF) linear combining of diversity channels requires that all frequency components be added in = phase. In view of the time-variant phase characteristics of fading channels, some form of instantaneous phase correction must be provided prior to the diversity combining so that proper in-phase addition will result.
P. Bello, B. Nelin
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Correction to "Predetection Diversity Combining with Selectivity Fading Channels"
IRE Transactions on Communications Systems, 1962P. Bello, B. Nelin
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