Real-time quality control of GNSS measurements can be performed using a single-receiver single-channel approach. The local DIA procedure can be utilised for this purpose using only observations of the epoch where data are collected. A description of the proposed method is given in this paper. A geometry-free observation equation model is proposed. Due to rank deficiency during initialisation of...

The problem of synchronous multiuser receiver design in the case of direct-sequence single-antenna code division multiple access (DS-CDMA) uplink networks is studied over frequency selective fading channels. An exact expression for the bit error rate (BER) is derived in the case of BPSK signaling. Moreover, an algorithm is proposed for finding the finite impulse response (FIR) receiver filters ...

For conventional orthogonal frequencydivision multiplexing (OFDM) systems, the guard interval is disregarded in the receiver and rectangular shaped windows are used implicitly due to the discrete Fourier transform (DFT). We consider a Nyquistshaped window in the receiver, so that the transmit signal does not need to be modified, and optimize the window shape in order to suppress interference fr...

In this paper, an asynchronous, multicarrier directsequence code-division multiple-access (DS-CDMA) array receiver is proposed based upon blind, composite channel vector estimation. Due to the fact that the combined effect of all received paths is estimated, the total number of paths can be greater than the number of antennas in the receiver array. Furthermore, the proposed approach is not limi...

Incremental Redundancy Hybrid Automatic Repeat Request (HARQ-IR) retransmission protocol was developed to reduce the transmission errors over fading channels through multiple retransmissions. In this paper, we implement HARQ-IR for Single User MIMO systems with Successive Interference Canceling (SIC) receiver. We perform the throughput and reliability analysis for the MIMO system with Closed Lo...

Emitter geolocation using a single moving receiving-station is explored. We propose algorithms for transponder-aided geolocation of an emitting station where the transmitted waveform is either known or unknown a priori. The emitter position is estimated directly (in a single-step) from the received signal samples. Numerical examples are provided to illustrate the performance. The results are co...

The description and performance analysis of a new OFDM/DQPSK signal receiver is considered in this paper. The proposed receiver has performance that is close to the performance for the coherent detection of the OFDM/DQPSK signal, in case of zero carrier frequency offset. In case of non-zero frequency offset, receiver with decision feedback differential detection (DFDD-OFDM) is often used in the...

The C-Band All-Sky Survey is a project to map the full sky in total intensity and linear polarization at 5 GHz. The northern component of the survey uses a broad-band singlefrequency analogue receiver fitted to a 6.1-m telescope at the Owens Valley Radio Observatory in California, USA. The receiver architecture combines a continuous-comparison radiometer and a correlation polarimeter in a singl...

A new technique for multi-method dispatch, called Single-Receiver Projections and abbreviated SRP, is presented. It operates by performing projections onto single-receiver dispatch tables, and thus benefits from existing research into single-receiver dispatch techniques. It provides method dispatch in O(k), where k is the arity of the method. Unlike existing multi-method dispatch techniques, it...

We present a new self-stabilizing protocol for many-to-one multicasting of messages. It is based on the window washing protocol of Costello and Varghese which uses positive acknowledgments for received messages. The assumed model uses a single queue at the receiver's side taking all the messages sent by N senders. The protocol provides ow control independently for every sender by dividing the q...