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Abstract
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| For the digital signal processing (DSP) part of mixed-signal systems, fixed-point arith-metic is favoured due to its high efficiency in terms of implementation cost, namely energyconsumption, area, and latency. Fixed-point arithmetic provides low-cost operators at theexpense of an unavoidable error between the ideal precision values and the finite precisionones. With a careful data word-length optimisation process, the designer can safely profitfrom the inherent trade-off between implementation cost and computation accuracy. Inthis chapter, we describe in detail the different stages comprising the fixed-point con-version process (i.e., dynamic range evaluation, word-length optimisation, and accuracyevaluation) and propose practical solutions to address each stage. | |
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International
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Si |
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10.1049/PBCS040E_ch |
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Book Edition
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Book Publishing
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IET Digital Library |
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ISBN
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978-1-78561-609-9 |
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Series
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Book title
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Digitally Enhanced Mixed Signal Systems |
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From page
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289 |
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To page
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326 |