DC Field | Value | Language |
---|---|---|
dc.contributor.author | Joshi, Siddharth | ko |
dc.contributor.author | Kim, Chul | ko |
dc.contributor.author | Thomas, Chris M. | ko |
dc.contributor.author | Cauwenberghs, Gert | ko |
dc.date.accessioned | 2019-12-13T07:23:45Z | - |
dc.date.available | 2019-12-13T07:23:45Z | - |
dc.date.created | 2019-11-15 | - |
dc.date.created | 2019-11-15 | - |
dc.date.issued | 2019-11 | - |
dc.identifier.citation | IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, v.66, no.11, pp.4095 - 4107 | - |
dc.identifier.issn | 1549-8328 | - |
dc.identifier.uri | http://hdl.handle.net/10203/268888 | - |
dc.description.abstract | This paper studies multi-stage capacitive mixed-signal matrix-vector multiplying digital-to-analog (MDAC) conversion topologies for highly energy-efficient, high-resolution, and high-dimensional MIMO analog processing systems. In order to mitigate nonlinearity due to radix errors and capacitive mismatch encountered in compact low-power MDAC realizations, we introduce stochastic successive approximation, or S(2)A, as an online optimization algorithm for adaptive array analog signal processing amenable to efficient implementation in massively parallel mixed-signal hardware. S(2)A offers a direct alternative to stochastic gradient descent overcoming several of its shortcomings, such as its sensitivity to model error, while improving on the rate and quality of convergence. S(2)A overcomes non-convergence typically encountered with gradient descent for non-convex optimization landscapes induced by a mismatch in capacitive multiplying digital-to-analog converter components when applied to adaptive analog signal processing. Experimental validation of S(2)A in mixed-signal hardware for real-time RF adaptive beamforming demonstrates 65 dB of over-the-air, multipath interferer suppression in fewer than 25 S(2)A iterations. | - |
dc.language | English | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | Digitally Adaptive High-Fidelity Analog Array Signal Processing Resilient to Capacitive Multiplying DAC Inter-Stage Gain Error | - |
dc.type | Article | - |
dc.identifier.wosid | 000494680200001 | - |
dc.identifier.scopusid | 2-s2.0-85077448718 | - |
dc.type.rims | ART | - |
dc.citation.volume | 66 | - |
dc.citation.issue | 11 | - |
dc.citation.beginningpage | 4095 | - |
dc.citation.endingpage | 4107 | - |
dc.citation.publicationname | IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | - |
dc.identifier.doi | 10.1109/TCSI.2019.2926447 | - |
dc.contributor.localauthor | Kim, Chul | - |
dc.contributor.nonIdAuthor | Joshi, Siddharth | - |
dc.contributor.nonIdAuthor | Thomas, Chris M. | - |
dc.contributor.nonIdAuthor | Cauwenberghs, Gert | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Signal processing algorithms | - |
dc.subject.keywordAuthor | Array signal processing | - |
dc.subject.keywordAuthor | Adaptive arrays | - |
dc.subject.keywordAuthor | Capacitors | - |
dc.subject.keywordAuthor | Adaptive systems | - |
dc.subject.keywordAuthor | Optimization | - |
dc.subject.keywordAuthor | Multiplying digital-to-analog conversion (MDAC) | - |
dc.subject.keywordAuthor | mixed-signal matrix-vector multiplication (MVM) | - |
dc.subject.keywordAuthor | analog signal processing (ASP) | - |
dc.subject.keywordAuthor | multi-input multi-output (MIMO) | - |
dc.subject.keywordAuthor | least-mean-squares (LMS) adaptive filtering | - |
dc.subject.keywordAuthor | non-convex optimization | - |
dc.subject.keywordAuthor | Internet-of-Things (IoT) | - |
dc.subject.keywordPlus | CALIBRATION | - |
dc.subject.keywordPlus | NETWORKS | - |
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