The Impact of SAR-ADC Mismatch on Quantized Massive MU-MIMO Systems

Low-resolution analog-to-digital converters (ADCs) in massive multi-user (MU) multiple-input multiple-output (MIMO) wireless systems can significantly reduce the power, cost, and interconnect data rates of infrastructure basestations. Thus, recent research on the theory and algorithm sides has extensively focused on such architectures, but with idealistic quantization models. However, real-world ADCs do not behave like ideal quantizers, and are affected by fabrication mismatches. We analyze the impact of capacitor-array mismatches in successive approximation register (SAR) ADCs, which are widely used in wireless systems. We use Bussgang's decomposition to model the effects of such mismatches, and we analyze their impact on the performance of a single ADC. We then simulate a massive MU-MIMO system to demonstrate that capacitor mismatches should not be ignored, even in basestations that use low-resolution SAR ADCs.Comment: To be presented at Asilomar Conference on Signals, Systems, and Computers 202

La génesis de don Quijote y Sancho Panza como tipos cómicos, entre España y Francia, hasta 1642

The laughter theme would create some humorous characters who played a leading role in interludes and entremeses. However, these types evolved into more complex genres as comedy and tragicomedy. A mocking and primitive laughter ushered in a more elaborated comicality, reflected on topics as love, the self-perception or inanity. Also, several kinds of madness are explored: that of love, the specular madness or just pure insanity, which could lead either into disaster, or into a luminous craziness. The chivalric tradition and literary style beyond the Pyrenees would impose a decorum that lead to a process of stylization and moralization in Don Quixote, Sancho and Dulcinea, as a result a triumphant hedonism emerged, becoming the foundation of the novel reception.La elaboración del tema de la risa condujo a la construcción de unos tipos cómicos que fueron evolucionando en el recorrido de las fiestas y entremeses a géneros más complejos, como la comedia y la tragicomedia. De una risa elemental y burlesca se pasó a una comicidad más elaborada en temas como el amor, o la percepción de sí y la vanidad. También se exploran varios tipos de locura: la de amor, o la pérdida de la razón, que puede conducir al desastre, o a una locura luminosa. Al atravesar los Pirineos, la tradición caballeresca, y la literaria, imponen un decoro que produce un proceso de estilización y moralización de don Quijote, Sancho y Dulcinea, con el que se explica un hedonismo triunfante que sentará las bases de la recepción de la novela

Gratuité et développement ludique dans les comédies de Scarron et Molière

Guichemerre Roger. Gratuité et développement ludique dans les comédies de Scarron et Molière. In: Littératures classiques, n°27, printemps 1996. L’esthétique de la comédie. Actes du congrès organisé à Reims du 8 au 10 septembre 1995 par le Centre de Recherches sur les Classicismes Antiques et Modernes de l’Université de Reims-Champagne-Ardenne, avec le concours de l’Université, de la Ville de Reims et du Conseil Régional. pp. 281-289

Segrais, ou la diversité romanesque

Guichemerre Roger. Segrais, ou la diversité romanesque. In: Littératures classiques, n°15, octobre 1991. Romanciers du XVIIe siècle. pp. 185-193

Scarron, ou le romanesque contenu

Guichemerre Roger. Scarron, ou le romanesque contenu. In: Littératures classiques, n°15, octobre 1991. Romanciers du XVIIe siècle. pp. 137-144

Molière imitateur de lui-même : la « retractatio » dans ses dernières comédies

Guichemerre Roger. Molière imitateur de lui-même : la « retractatio » dans ses dernières comédies. In: Littératures 27, automne 1992. pp. 45-59