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Output SNR Improvement in Array Processing Architectures of WCDMA Systems by Low Side Lobe Beamforming

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Abstract

In Wideband direct sequence code division multiple access (WCDMA) same frequency spectrum is shared through all cells simultaneously, as opposed to TDMA which is used for most 2nd generation systems. In a WCDMA system all transmitted signals turn out to be disturbing factors to all other users in the system in the form of interference limiting the system capacity. To suppress the amount of interference, fast and reliable interference controlling algorithms must be employed in next generation systems. In this paper it is shown that antenna arrays with steer able low side lobes can reduce interference in WCDMA can increase the system capacity and output signal to noise ratio of the array processing architecture. The performance metric O/P SNR of an array processing architectures is simulated in an interfering environment to demonstrate the advantage of low side lobe beamforming over adaptive antennas.

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Authors and Affiliations

  1. Department of Electronics & Communication Engineering, Thapar Institute of Engineering & Technology, Patiala, India

    Rajesh Khanna

  2. Rustamji Institute of Technology, BSF Academy, Tekanpur, India

    Rajiv Saxena (Principal)

Authors
  1. Rajesh Khanna
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  2. Rajiv Saxena
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Rajesh Khanna was born in Ambala, India. He received B.Sc (Engg.) degree in Electronics & Comm. in 1988 from Regional Engineering College, Kurkshetra and M.E degree in 1998 from Indian Institute of Sciences, Bangalore He was with Hartron R&D centre till 1993. Until 1999 he was in All India Radio as Assistant Station Engineer. Presently he is working as Assistant Professor in the department of Electronics & Communication at Thapar Institute of Engineering & Technology, Patiala. He is also pursuing his PhD in the area of adaptive antennas for mobile communication. He has published 12 papers in national and International conferences.

Rajiv Saxena was born in Gwalior, India. He received his B.E degree in Electronics and Telecommunication Engineering from Jabalpur University, M.E degree in Elect Engg from Jiwaji University, Gwalior and PhD from University of Roorkee in 1982, 1990 and 1996 respectively. He worked as an engineer in GRASIM and Reliance Textile Industries till 1983. In 1984 he joined Electronics Engineering Department of Madhav Institute of Technology and Sciences, Gwalior as Lecturer. He became Reader in 1990 and Professor in 2002. Presently he is Principal Rustam Ji Institute of Technology, BSF Academy, Tekanpur Distt. – Gwalior (M.P.). He has published more than 53 papers in various national and International Journals and conferences. His research interests include wireless and mobile communication and Digital Signal Processing.

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Khanna, R., Saxena, R. Output SNR Improvement in Array Processing Architectures of WCDMA Systems by Low Side Lobe Beamforming. Wireless Pers Commun 40, 205–214 (2007). https://doi.org/10.1007/s11277-006-9110-1

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  • DOI: https://doi.org/10.1007/s11277-006-9110-1

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