James Okello

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The paper proposes a new technique for blindly separating mixed independent PSK or QAM signals. Unlike in speech and image processing where the probability density function (PDF) of source signals is Gaussian, the PDF of PSK and QAM signals is non-Gaussian. Thus, direct application of conventional methods for blind source separation (BSS) of speech or image(More)
A reconfigurable systolic array processor based on a coordinate rotation digital computer (CORDIC) algorithm is proposed for MIMO-OFDM baseband processing. With CORDIC, the processor provides high computation efficiency, and a multi-thread interleaving architecture offers the advantage of a simple data transfer mechanism. Also presented are an array mapping(More)
Equation error adaptive algorithm (EQ-E) for an adaptive infinite impulse response (IIR) digital filter is one of the IIR adaptive algorithms that exhibit global convergence. In the presence of a disturbance signal, the coefficients of the equation error based adaptive digital filter (ADF) converge to solutions with bias. In this paper, we propose a kind of(More)
In this paper, a new online algorithm for updating equation error IIR ADF is proposed. The proposed algorithm, which involves maintaining a constant power of the desired signal, is independent of the white disturbance signal, and hence there is no bias in the coefficient's estimate of the ADF. We also provide the analysis and simulation results which verify(More)
Adaptive infinite impulse response (IIR) digital filter implemented using a cascade of second order direct form allpass filters and a finite impulse response (FIR) filter, has the property of its poles converging to those of the unknown system. In this paper we implement the adaptive allpass-FIR digital filter using a lattice allpass filter with minimum(More)