Motorola

About: Motorola is a company organization based out in Schaumburg, Illinois, United States. It is known for research contribution in the topics: Signal & Communications system. The organization has 27298 authors who have published 38274 publications receiving 968710 citations. The organization is also known as: Motorola, Inc. & Galvin Manufacturing Corporation.

Reticle enhancement technology: implications and challenges for physical design

Abstract: In this paper, we review phase shift lithography, rule vs. model based methods for OPC and model-based tiling, and discuss their implications for layout and verificat ion. We will discuss novel approaches, using polarizing films on reticles, which change the game for phase-shift coloring, and could lead to a new direction in c:PSM constraints on physical design. We emphasize the need to do tiling that is model-driven and uses optimization techniques to achieve planarity for better manufacturing tolerance in the subwavelength dimensions era. Electromagnetic solver results will be presented which estimate the effect of tiling on circuit timing.

Design and analysis of power distribution networks in PowerPC/sup TM/ microprocessors

Abstract: We present a methodology for the design and analysis of power grids in the PowerPC/sup TM/ microprocessors. The methodology covers the need for power grid analysis across all stages of the design process. A case study showing the application of this methodology to the PowerPC/sup TM/ 750 microprocessor is presented.

Method and apparatus for providing a distributed architecture digital wireless communication system

Abstract: A mobile station (402) selects (1802) a preferred cell site for transmitting a frame of data to be sent subsequently to the mobile station. A base station (602) of the preferred cell site schedules (1804) a transmission of the frame of data, wherein parameters for the transmission are determined by the base station from recently-measured channel and interference information. Thereafter, the base station sends (1806) the frame of data from the preferred cell site; and an active set of base stations associated with the mobile station at ones of a plurality of cell sites synchronize (1808) their data queues to reflect the transmission of the frame of data.

Adhesive and encapsulant material with fluxing properties

Abstract: An adhesive material 120 including a fluxing agent is applied to either a substrate 100 having a metallization pattern 110 or a solder bumped electrical component 130. The component 130 is positioned on the substrate 110 and the solder bump 140 is reflowed. During the reflow step, the fluxing agent promotes adhesion of the solder 140 to the substrate metallization pattern 110, and the adhesive material 120 is cured to mechanically interconnect and encapsulate the substrate 110 to the component 130.

Minimal tail-biting trellises: the Golay code and more

Abstract: Tail-biting trellis representations of block codes are investigated. We develop some elementary theory, and present several intriguing examples, which we hope will stimulate further developments in this field. In particular, we construct a 16-state 12-section structurally invariant tail-biting trellis for the (24, 12, 8) binary Golay code. This tail-biting trellis representation is minimal: it simultaneously minimizes all conceivable measures of state complexity. Moreover, it compares favorably with the minimal conventional 12-section trellis for the Golay code, which has 256 states at its midpoint, or with the best quasi-cyclic representation of this code, which leads to a 64-state tail-biting trellis. Unwrapping this tail-biting trellis produces a periodically time-varying 16-state rate-1/2 "convolutional Golay code" with d=8, which has attractive performance/complexity properties. We furthermore show that the (6, 3, 4) quaternary hexacode has a minimal 8-state group tail-biting trellis, even though it has no such linear trellis over F/sub 4/. Minimal tail-biting trellises are also constructed for the (8, 4, 4) binary Hamming code, the (4, 2, 3) ternary tetracode, the (4, 2, 3) code over F/sub 4/, and the Z/sub 4/-linear (8. 4, 4) octacode.