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Title:
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Reducing Dynamic Power Consumption in Next Generation DS-CDMA Mobile Communication Receivers |
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Author:
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Chandrasekhar, Vikram
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Type:
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Masters Thesis |
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Keywords:
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Power Consumption; RAKE Receiver; CDMA |
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Citation:
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V. Chandrasekhar, "Reducing Dynamic Power Consumption in Next Generation DS-CDMA Mobile Communication Receivers," Masters Thesis, 2002. |
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Abstract:
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Reduction of the power consumption in portable wireless receivers is an important consideration for next-generation cellular systems specified by standards such as the UMTS, IMT2000. This thesis explores the design-space for reducing the dynamic power dissipation in a RAKE receiver for the Direct Sequence Code Division Multiple Access (DS-CDMA) downlink. Starting with a reference implementation of the DS-CDMA RAKE receiver, we demonstrate design methodologies for achieving significant power reduction, while highlighting the corresponding performance trade-offs. At the algorithm level, we investigate the impact of reduced precision and arithmetic complexity on the performance of the DS-CDMA RAKE receiver. We then present architectures for implementing the reference and reduced complexity DS-CDMA RAKE receivers, and analyze these architectures with respect to their dynamic power dissipation. Finally, we analyze clock-gating techniques for reducing the activity rate in both the architectures to achieve further power reduction. |
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Date Published:
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2002-08-01 |
