On Knockout-based AUM Switches

• Main Authors: Chen, Jei-Ching, 陳捷慶
• Other Authors: C. Bernard Shung
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/01088125112523971587

碩士 === 國立交通大學 === 電子研究所 === 84 === In the Knockout switch, it was observed that satisfactory cell lossperformance could be obtained with a modest number of concentrator output independent of the switch dimension. Several Knockout-based switch architectures have sinc been proposed in which techniques such as concentrator feedback with input buffering and output groupingwere employed to reduce the number of concentrator outputs, and hencethe complexity. In this paper, we propose the Knockout switch withgrouping (KIG) which pre-concentrates switch inputs in groups, and thus reduces the number of concentrator inputs. Such complexity reductionof concentrators greatly outweighs the overhead in pre- concentratorsbased on the estimated layout area. The KIG switch can be furtherimproved by employing output buffer feedback and output grouping. Itwas found that the KIG switch with output grouping (KIGOG) is capableof achieving comparable cell loss performance with less area comparing to theone with output buffer feedback. When comparing to other Knockout-based switches with the same output grouping factor and comparable performanceunder bursty traffic, the KIGOG switch requires the least layout area,which is less than one half of the Abacus switch, and is about one thirdof the Growable switch.