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In this paper, we present a linear joint transceiver design for downlink transmissions of multiuser multi-input multioutput (MU-MIMO) system using lattice reduction algorithms, based on the minimum sum of the mean-squared errors (MSEs) criterion and subject to a per-user power constraint. Our design consists of two main steps. First, we decompose the MU-MIMO system into parallel single user (SU-)...
This paper proposes a novel linear transceiver design using lattice reduction algorithms. We propose a novel transceiver optimization problem that aims to minimize the sum of mean square errors (MSEs) of information symbols in a lattice-reduced domain. To alleviate the high complexity of solving the optimization problem, we devise an alternating algorithm to find a sub-optimal solution with low complexity...
Traditional transmitted reference (TR) systems for Ultra-Wideband (UWB) communications separate the reference and data-modulated signals in the time domain, thus requiring at the receiver a delay component which is difficult to implement. To circumvent this drawback, frequency-shifted reference (FSR-TR) systems employ an analog carrier to make the reference and data-modulated signals orthogonal with...
Orthogonal frequency division multiplexing (OFDM) systems often have to conform to error vector magnitude (EVM) and spectral mask constraints as specified by communications standards. On the other hand, peak-to-average power ratio (PAR) of the signal waveform is also an important metric that influences the system power efficiency and system performance in the presence of nonlinearities. An interesting...
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