In this paper we introduce the dual-header pulse interval modulation (DH-PIM) technique employing a simple retransmission coupled with a majority decision detection scheme at the receiver. We analytically investigate the slot error rate (SER) performance and compare results with simulated data for the symbol retransmissions rates of three, four and five, showing a good agreement. We demonstrate...

In this work, we address the problem of blind separation of non-synchronous statistically independent sources from underdetermined mixtures. A deterministic tensor-based receiver exploiting symbol rate diversity by means of parallel deflation is proposed. By resorting to bank of samplers at each sensor output, a set of third-order tensors is built, each one associated with a different source sy...

We propose two schemes for asynchronous multi-relay two-way relay (MR-TWR) systems in which neither the users nor the relays know the channel state information. In an MR-TWR system, two users exchange their messages with the help of NR relays. Most of the existing works on MR-TWR systems based on differential modulation assume perfect symbol-level synchronization between all communicating nodes...

The main objectives of iNET (Integrated Network Enhanced Telemetry) are increased data rate and improved spectral efficiency [1]. In this paper we propose that transmission scheme for the physical layer is coded 16-QAM OFDM (Quadrature Amplitude Modulation-Orthogonal Frequency Division Multiplexing) which enables high data rate and spectrum efficiency. However in high mobility scenarios, where ...

In this paper we evaluate performance of the vertical BLAST (VBLAST) receiver algorithm in multipletransmitter/multiple-receiver (MTMR) cellular WCDMA systems. We assume that the VBLAST algorithm is executed on a symbol level (i.e, on the despreaded received signal), following a conventional bank of matched filters (correlators). Also, we introduce concept of virtual antennas. BER performance o...

This paper presents a new symbol-rate timing recovery approach based on adaptive interpolation to reduce the sampling frequency of analog-to-digital converter (ADC) and power consumption for low-energy high-speed wireless communication system, such as ultra-wideband (UWB) system. Using a principle of maximum absolute-squared sum (MASS), the ADC can select the optimal clock phase provided by a m...

In wireless ultra-wideband (UWB) communication systems, the high data rate propagation is exposed to multiple-users interference (MUI), inter-symbol interference (ISI), and multiple-access interference (MAI), which are influencing the enhanced and performance of the wireless reception systems. In this work, the blind adaptive filtering of mean square error (MSE) adaptive filter in the transmitt...

This paper proposes a simple combining technique with arbitrary modulations for a cooperative relay scheme based on a Detect-and-Forward (DEF) relay protocol. Here we present Maximum Likelihood (ML) criterion detection at the destination which considers individual symbol error rate (SER) to facilitate the detection in noisy relay networks. In particular, our proposed algorithm is flexible to si...

In the new digital video broadcasting standard using satellites, denoted as DVB-S2, 16-ary and 32-ary amplitude-phase shift keying APSK are applied as modulation techniques. Optimum decision algorithms for 16-APSK and 32-APSK resulting from Voronoi diagrams demand relatively complicated hardware, typically high-capacity memories for demapping tables. In this paper, the efficient method based on...

ABSRACT: The cost incurred on installation for broadband data for consumer has made the power line communication the technology to be considered for the provision. As appropriate as this medium is, the challenges inherent in it makes high-speed transmission unreliable, as signal propagated through it suffers attenuation, experiences multipath and bewitchment of noise. This causes depreciation o...