There has been a strong trend towards the specification of multi-carrier Coded Orthogonal Frequency Division Multiplexing (COFDM) in the physical layer of emerging high performance Wireless Local Area Networks (WLAN). This trend is based on an alleged combination of enhanced performance and lower terminal complexity. However, in recent years significant advances have been made in the field of s...

This letter presents and analyzes orthogonal frequency-division multiplexing (OFDM)-based multi-carrier transmission for cell-free massive multi-input multi-output (CFmMIMO) over frequency-selective fading channels. Frequency-domain conjugate beamforming, pilot assignment, user-specific resource allocation are proposed. The CFmMIMO-OFDM system is scalable to serve a number of users flexible off...

In a GPS receiver, the goal of the signal tracking is to synchronize local generated code and carrier with the received signal. After a step of acquisition, the receiver tracks the shifting of the local code provoked by the movements of the receiver and satellites. In the future evolution of the GPS, the system will have several carrier frequencies, then it will be possible to have several trac...

In this papel; we propose an eficient method to analyze the performance of coded multi-carrier systems over multipath jading channels. The computation complexity is low and moreover, the analysis is able to capture the system performance with a speciJic interleaver which is not possible under the common unform interleaving assumption. The framework in this paper can also be generalized to coded...

A new formalism of spectral filtering for the description of the modulation processes is proposed. The method allows one to study the classical problem of multi-phase modulations in dispersive systems. In the present paper, deepwater waves are considered. Spectral filtering results in a system of coupled equations that describe the modulations of the carrier wave and its harmonics. The formalis...