The effect of a bandpass limiter in code division multiple access (CDMA) quadriphase shift keying (QPSK) satellite spread spectrum communication systems is investigated. The case of a cochannel interferer on the uplin...
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M-QAM dual-polarized transmission became an important method for frequency re-use, particularly in microwave radio communication. However, the orthogonally polarized waves suffered degradation due to cross polarizatio...
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In this paper, we propose a new fast multidimensional adaptive algorithm named Bootstrap for multi signal separation. It separates multi uncorrected signals imposed on each other. Bootstrap adaptive algorithm which do...
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In this paper we present a new design method for 2-D zero-phase finite impulse response (FIR) fan filters with centrally symmetric frequency responses, via the generalized Mc-Clellan transform. The formulas are derive...
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An analysis of band energy distributions in perfect reconstruction (PR) multirate systems is presented, and the effects of aliasing are evaluated. A performance measure called nonaliasing energy ratio (NER) is defined...
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General order-recursive least-squares estimation employing a sliding window is described. It is shown that time and order updates of any order-recursive sliding window least-squares algorithm can be obtained solely by...
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A constrained anti-Hebbian algorithm that is used for processing complex signals is presented. It is shown that the algorithm adaptively extracts the eigenvector associated with the smallest eigenvalue of the correlat...
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The problem of separation of superimposed frequency modulated (FM) sinusoids is addressed. A cross-coupled signal controlled constrained null filter (CC-SCCNF) is proposed to separate the individual signal from the su...
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The problem of separation of superimposed frequency modulated (FM) sinusoids is addressed. A cross-coupled signal controlled constrained null filter (CC-SCCNF) is proposed to separate the individual signal from the sum of a number of FM signals whose power spectra may overlap. An advantage of the proposed CC-SCCNF is that one does not have to make any assumption on the mixture of the superimposed FM signals, other than that the number of FM signals is a priori known. A necessary condition is described in terms of the trajectories of the SCCNF coefficients. These trajectories are monitored by measuring the instantaneous Euclidean distance between any two SCCNF trajectories. A proof of the CC-SCCNF convergence to a unique solution for the separation of signals is provided. Several computer simulation results are also presented.< >
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