Open AccessJournal Article
Effect of Wideband Signals on Smart Antenna
TLDR
This paper is to investigate smart antenna applications for Direct Sequence Code Division Multiple Access (DS-CDMA) systems and to study the effect of wideband signals on smart antenna.Abstract:
Over the last few years, wireless cellular communications has experienced rapid growth in the demand for provision of high data rate wireless multimedia services. For a fixed bandwidth of spectrum there is a fundamental limit on the number of radio channels that are realized by wireless communication systems. Anticipating such limits, considerable amount of work has to be done on the use of time, frequency, and coding techniques to increase the capacity. This motivates the need to find ways to improve the spectrum efficiency of wireless communication systems. Smart antennas have emerged as a promising technology to enhance the spectrum efficiency of present and future wireless communications systems by exploiting the spatial domain. The aim of this paper is to investigate smart antenna applications for Direct Sequence Code Division Multiple Access (DS-CDMA) systems and to study the effect of wideband signals on smart antenna.read more
Citations
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Effect of Modulation Schemes on Performance of OFDM based Wireless Network using Smart Antenna
TL;DR: In this paper, the effect of different modulation techniques (QPSK, 16QAM and 64QAM) and number of antenna elements at the receiver (Smart Antenna) on the performance of beamforming in OFDM based wireless network is presented.
Improved cma: a beamforming algorithms for wireless system using smart antenna
TL;DR: This paper aims to determine various performance measuring parameters such as beamwidth, mainlobe gain and average sidelobe gain for smart antennas used in wireless system using MATLAB.
References
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Journal ArticleDOI
Application of antenna arrays to mobile communications. II. Beam-forming and direction-of-arrival considerations
TL;DR: This paper provides a comprehensive and detailed treatment of different beam-forming schemes, adaptive algorithms to adjust the required weighting on antennas, direction-of-arrival estimation methods-including their performance comparison-and effects of errors on the performance of an array system, as well as schemes to alleviate them.
Journal ArticleDOI
Adaptive Antenna Systems
TL;DR: The techniques described in this paper are applicable to signal‐receiving arrays for use over a wide range of frequencies and substantial reductions in noise reception are demonstrated in computer‐simulated experiments.
Journal ArticleDOI
Adaptive antenna systems
TL;DR: In this article, a simple adaptive technique based on the least-mean-squares (LMS) algorithm is proposed to adjust the variable weights of a signal processor by forming appropriate nulls in the antenna directivity pattern.
Proceedings Article
Antenna theory
TL;DR: The energy o f the observed signal may contain frequencies a l l t h e way from 1 h e r t z t o above 100 Mhz and the presence o f such atmospheric energy needs to be understood.