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Analog Multitone with Interference Suppression: Relieving the ADC Bottleneck for Wideband 60 GHz Systems

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Executive Summary

Commercial exploitation of the large amounts of unlicensed spectrum available at 60 GHz requires that the authors take advantage of the low-cost Digital Signal Processing (DSP) made available by Moore's law. A key bottleneck, however, is the cost and power consumption of high-precision Analog-to-Digital Converters (ADCs) at the multiGigabit rates of interest in this band. This makes it difficult, for example, to apply traditional DSP-based approaches to channel dispersion compensation such as time domain equalization or Orthogonal Frequency Division Multiplexing (OFDM), since these are predicated on the availability of full-rate, high-precision samples.

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