A novel approach in quantifying code orthogonality factor for UTRA-FDD systems is extended in this paper to include the impact of down-link beamforming. The effects of fixed beam forming on code orthogonality is analysed through the aid of real channel data taken from urban cellular environments. The results show a significant overall improvement in code orthogonality with beam forming, especia...

This correspondence considers multiple-input single-output (MISO) wireless systems with equal gain transmission (EGT) at the transmitter and maximum ratio combining (MRC) at the receiver. In such systems, the receiver feedbacks the elemental phases of beam-forming vectors to the transmitter. Due to finite feedback rate, the elemental phases of beam-forming vectors have to be quantized effective...

In wireless ad-hoc networks, the beam forming antenna technology is a new and promising solution to many challenges. Beam forming antennas have the ability to increase the spatial reuse, improve the transmission reliability, extend the transmission range and/or save the power consumption. If they are effectively used, they can significantly improve the network capacity, lifetime, connectivity a...

1Basuraju S, SAP Consultant , GE Technologies, , Karnataka, India 2 Nethravathi H M, Assistant Professor, Mechatronics Department, AIT, Karnataka, India 3 Sharath Kumar A J, Assistant Professor, ECE Department, VVCE, Karnataka, India ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract In order to re...

In this paper at wireless network we use the cognitive radio (CR) channels for communication. The performance of the process is limited by the self-interference which occur in the CR system. To overcome that problem beam forming method is used effectively which reduces the self-interference of smart meter channels. MMSE method is the main concept in the beam forming method utilized in the smart...

Firstly, this paper researches on the scheme of amplitude weighting(AW) for smart antenna(SA) beamforming in linear array. With the proposed mathematical model in this paper, QPSK base-band AW is an effective method for linear SA to realize multi-user and multi-direction transmission, by which the perfect directional beam-forming can be realized with low complexity and low cost. Secondly, this ...