DESIGN CONSIDERATIONS FOR MULTI-CARRIER CDMA BTS POWER AMPLIFIERS

Osama W. Ata

Abstract

System manufacturers that provide wireless telecommunications equipment to cellular operators, often do not manufacture their own transceivers. They get their own supplies from various base station power amplifier vendors. Unfortunately cellular operators and system providers take design considerations of those primary power amplifiers for granted. The consequences are: Operators are overpaying for base station amplifiers to meet power and capacity demands. Base stations are complicated systems and the optimum technical design considerations of the power amplifier sub-systems have a major impact on multi-carrier Code Division Multiple Access (CDMA) Base Transceiver Station (BTS) performance. This paper discusses those power amplifier vendor claims, demonstrates design considerations and economic design solutions of consequent savings for the operator, based on a realistic market case. We realize that upfront savings, in power amplifier units, in a US market of approximately 550 multi carrier basestation sectors would exceed $ 10 M.

References

  1. Zekavat, S.A. Nassar, C.R., "Achieving high-capacity wireless by merging multicarrier CDMA systems and oscillating-beam smart antenna arrays", IEEE Transactions on Vehicular Technology, vol. 52, no. 4, July 2003, pp 772-778.
  2. Hongxi, Xue; Davies, R.; Beach, M.; McGeehan, J., "Application of linearised amplifiers in adaptive antennas", MTT-S Symposium on Technologies for Wireless Applications, Feb 1995, pp 51-56.
  3. Yang, S., "The application of low noise amplifiers in CDMA cellular and PCSsystems for coverage and capacity enhancements", IEEE Radio and Wireless Conference, Aug 1998, pp. 181-184.
  4. Wright, Andrew and Nesper, Oliver, " Multi-Carrier WCDMA Basestation Design Considerations - Amplifier Linearization and Crest Factor Control", Technology White Paper, PMC-Sierra, Inc., Issue 1, Aug 2002, pp. 1-35.
  5. Liberti, Joseph and Rappaport, Theodore, Smart Antennas for Wireless Communications: IS-95 and Third Generation CDMA Applications, Prentice Hall, Upper Saddle River, New Jersey, 1999.
  6. Ata, Osama W., “Two-tone and Nine-Tone Excitations in Future Adaptive Predistorted Linearized Basestation Amplifiers of Cellular Radio.”, Wireless Personal Communications, Intr. Jr., Kluwer Academic Publishers, Vol. 16, No. 1, Jan 2001, pp.1-19.
  7. Kenny, J .S. and Luke, A., “Design Considerations for Multicarrier CDMA Basestation Power Amplifiers.”, Microwave Journal, Vol 42, No. 2, Feb 1999, pp. 76-86.
  8. CDMA Emission Mask: Federal Communications Commission (FCC) Part 24 rules.
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Paper Citation


in Harvard Style

W. Ata O. (2007). DESIGN CONSIDERATIONS FOR MULTI-CARRIER CDMA BTS POWER AMPLIFIERS . In Proceedings of the Second International Conference on Wireless Information Networks and Systems - Volume 1: WINSYS, (ICETE 2007) ISBN 978-989-8111-14-2, pages 134-139. DOI: 10.5220/0002145301340139


in Bibtex Style

@conference{winsys07,
author={Osama W. Ata},
title={DESIGN CONSIDERATIONS FOR MULTI-CARRIER CDMA BTS POWER AMPLIFIERS},
booktitle={Proceedings of the Second International Conference on Wireless Information Networks and Systems - Volume 1: WINSYS, (ICETE 2007)},
year={2007},
pages={134-139},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002145301340139},
isbn={978-989-8111-14-2},
}


in EndNote Style

TY - CONF
JO - Proceedings of the Second International Conference on Wireless Information Networks and Systems - Volume 1: WINSYS, (ICETE 2007)
TI - DESIGN CONSIDERATIONS FOR MULTI-CARRIER CDMA BTS POWER AMPLIFIERS
SN - 978-989-8111-14-2
AU - W. Ata O.
PY - 2007
SP - 134
EP - 139
DO - 10.5220/0002145301340139