The growing market of GNSS capable mobile devices is driving the interest of GNSS software solutions, as they can share many system resources (processor, memory), reducing both the size and the cost of their integration. Indeed, with the increasing performance of modern processors, it becomes now feasible to implement in software a multichannel GNSS receiver operating in real time. However, a m...

The ability to support multiple communications channels per RF band is a fundamental process for many software defined radio platforms. These platforms typically employ a channelizer to extract channels from the received RF band for follow-on baseband processing, or to insert channels into the RF band for transmission. This paper will compare and contrast three of the more popular channelizatio...

Cochlear implants are an accepted and effective treatment for restoring hearing sensation to people with severe-to profound hearing loss. Contemporary cochlear implants consist of a microphone, a sound processor, a transmitter, a receiver, and an electrode array that is positioned inside the cochlea. The sound processor is responsible for decomposing the input audio signal into different freque...

In this article we present the concept of a FPGA-based GPS receiver architecture with the aim of providing a framework for investigating new receiver architectures for current and upcoming GNSS standards. This development system facilitates researchers to prove new receiver concepts using real signals, which nowadays can only be simulated using tools such as Matlab. One will be able to work wit...

A new Danish C-band SAR was tested in the fall of 1989. As part of the system a very flexible software processor has been developed. The processor is designed to serve several purposes such as experimental test and analysis processor, real-time processor development tool, and operational off-line processor. The processor also holds substantial motion compensation features, and they are describe...

This paper presents a new denoising method for base-band communication signals corrupted by additive noise. The novelty of this paper is the use of a special MAP filter, called composed bishrink, for communication purposes. A complete statistical analysis of this filter is reported. Some simulations are presented. The results obtained are compared with the results of matched filtering technique...

In this paper, an optimal approach to design wideband tapped-delay line (TDL) array antenna is proposed. This approach lets us control the array angular and frequency response over a wide frequency band. To this end, some design restrictions are defined and a multi-objective optimization problem is constructed by putting the individual restrictions together. The optimal weights of the TDL proce...

Range and depth source localization in shallow water amounts to the estimation of the normalmode structure of the acoustic field. As "seen" by a vertical array, and from a modeling point of view, the normal-mode structure appears as a set of nonplane coherent waves closely spaced at a vertical angle. This paper presents a full-wave-field narrow-band high-resolution technique that uses the spect...

In this paper the design of 128/64 point Fast Fourier transform processor (FFT Processor) is proposed to support future generation Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing (MIMO OFDM) based IEEE 802.11n wireless local area network base band processor. The pipelined mixed radix delay feedback (MRMDF) FFT architecture is proposed to provide a higher throughput rat...