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We study through analysis the joint effect of time offsets, frequency offsets, and multi-path fading in the uplink of an asynchronous multiuser system for wireless communications deploying discrete multi-tone modulation and demodulation. We derive analytical expressions for the multiple access interference, and we quantify its detrimental effects through(More)
—In this letter, we propose two new Nyquist (in-tersymbol interference free) pulses that exhibit better error probability performance in the presence of sampling errors than the popular raised-cosine and a recently proposed pulse by Beaulieu, Tan, and Damen. The new pulses are also robust to the root and truncation operations. T HE most commonly used(More)
We address the efficient realization of a filtered multitone (FMT) modulation system and its orthogonal design. FMT modulation can be viewed as a Discrete Fourier Transform (DFT) modulated filter bank (FB). It generalizes the popular orthogonal frequency division multiplexing (OFDM) scheme by deploying frequency confined subchannel pulses. We compare three(More)
We follow a bottom-up approach for modelling the channel transfer function aiming at realizing a fast statistical channel simulator. The simulator is derived from transmission line theory. It computes the transfer function via a fast procedure that calculates the voltage ratio between the receiver port and the transmitter port given a real or randomly(More)
This paper deals with the design and implementation of a filtered multitone (FMT) modulation system. FMT generalizes the popular OFDM scheme through the deployment of subchannel shaping filters. We address the implementation problem and we describe (and compare in terms of complexity) two efficient implementation methods in the time domain (TD) and another(More)
This paper reviews existing noise models including both background and impulsive noise for the in-home PLC scenario, highlighting similarities and differences. With reference to the impulsive noise, it is shown that a simple model, in the frequency band up to 100 MHz, can be derived by considering the noise generated at the source and taking into account(More)