Khaled Amleh

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In this paper, we consider the problem of joint carrier offset and code timing estimation for CDMA (code division multiple access) systems. In contrast to most existing schemes which require multi-dimensional search over the parameter space, we propose a blind estimator that solves the joint estimation problem algebraically. By exploiting the noise subspace(More)
—Block transmission techniques, including single-carrier (SC) and multicarrier (MC) communication techniques, have received much research interest recently for their better ability to handle the intersymbol interference problem than continuous transmission. Numerous detection schemes for SC and MC communication systems have been proposed. While these(More)
—Block transmission has recently been considered as an alternative to the conventional continuous transmission technique. In particular, block transmission techniques with zero padding (ZP) and cyclic prefix (CP) are becoming attractive procedures for their ability to eliminate both intersymbol interference (ISI) and interblock interference (IBI). In this(More)
— Block transmission techniques have received much research interest recently for their ability to eliminate the inter-symbol interference problem associated with continuous transmission. Numerous detection schemes for single carrier and multi-carrier have been proposed. While these schemes may be derived from different principles, they usually rely on some(More)
A blind channel estimation and equalisation scheme is given for orthogonal frequency-division multiplexing systems with unmodelled interference. The approach uses a generalised multichannel minimum variance principle to design an equalising filterbank that preserves the desired signal components and suppresses the overall interference. A channel estimate is(More)
—In this paper, we present a blind code-timing esti-mator for asynchronous code-division multiple-access (CDMA) systems that use bandlimited chip waveforms. The proposed esti-mator first converts the received signal to the frequency domain, followed by a frequency deconvolution to remove the convolving chip waveform, and then calculates the code-timing(More)