In this paper, Space Time Adaptive Processing (STAP) applied on wideband signals from uniformly spaced real elements using Direct Data Domain Least Squares (DLS). Two antenna configurations are used: an array of dipole antenna (narrowband antenna) and an array of patch antenna (wideband antenna). A frequency transformation technique is used only for the case of narrowband antenna which transfor...

In Recent years, the digital signal processing has progressed remarkably. Development of the digital beam forming (DBF) array antenna is necessary for the future mobile communication systems. The DBF array antenna realizes beam operation with appropriate weight in each element by using digital signal processing. Therefore, the DBF array antenna is investigated by many researchers. However the D...

Adaptive antenna arrays are widely used and have great promise to reduce the effects of interference and to increase capacity in mobile communications systems. Consider a single cell system with an (receiving) antenna array at the base station. The usual algorithms for obtaining the antenna weights for the adaptive array depend on parameters that are held fixed no matter what the operating situ...

As the use of phased array radars becomes more established for weather surveillance, adaptive array processing techniques will become more important to the weather radar community. Such techniques can be applied to phased array radars to improve angular resolution and also to suppress clutter compared to conventional beamforming methods. Thus, enhanced details of weather phenomena can be realiz...

Both, adaptive antenna arrays for ISI cancellation and non-linear hard limiter receivers are well known as key technologies for high data rate low-cost receivers [1][2]. However, the combination of both technologies is a big challenge since non-linear receivers only provide phase or frequency samples. The amplitude information, which is required for the adaptation of the antenna array, is not a...

Abstract— Orthogonal frequency division multiplexing (OFDM) has been attracting much attention as the next generation wireless transmission technique. In a cellular network, the same carrier frequency is reused at different base stations and therefore, cochannel interference (CCI) limits the transmission performance. By suppressing the CCI, the uplink transmission performance can be improved an...

In our application targeted here, four on-glass antenna elements are set in an automobile to improve the reception quality of mobile ISDB-T receiver. With regard to the directional characteristics of each antenna, we propose and implement a joint Pre-FFT adaptive array antenna and Post-FFT space diversity combining (AAA-SDC) scheme for mobile ISDB-T receiver. By applying a joint hardware and so...

The wireless cellular base station antenna system employs switched beam technology which suffers from its inefficiency to track the user and limited capacity. The Smart antenna tracks the mobile user more efficiently by directing the main beam towards the user and forming nulls in the directions of the interfering signal. Smart antennas include the design of antenna array and adjusting the inco...

The following tutorial is an introduction to the essential concepts of smart antenna systems and the important advantages of smart antenna system design over conventional omnidirectional approaches. The discussion also differentiates between the various and often dissimilar technologies broadly characterized today as smart antennas. These range from simple diversity antennas to fully adaptive a...

The following tutorial is an introduction to the essential concepts of smart antenna systems and the important advantages of smart antenna system design over conventional omnidirectional approaches. The discussion also differentiates between the various and often dissimilar technologies broadly characterized today as smart antennas. These range from simple diversity antennas to fully adaptive a...