Abstract: Alternative direct sequence spread spectrum symbol to chip mappings and methods for generating the same for use in a direct sequence spread spectrum wireless protocol and embedded in a transceiver chip used by wireless subsystems are provided. The present invention discloses alternative symbol to chip mappings that are orthogonal or nearly orthogonal to the N/2 unused chip sequences defined by a standard transmission protocol. The present invention is advantageous because it provides for an increased number of users and better reliability for wireless subsystems operating in increasingly overcrowded frequency bands. Other advantages of the present invention include a reduction in the negative effects of clear channel assessment including delayed or cancelled signal transmission and interference for wireless subsystems that transmit time-sensitive data.

Abstract: Alternative direct sequence spread spectrum symbol to chip mappings and methods for generating the same for use in a direct sequence spread spectrum wireless protocol and embedded in a transceiver chip used by wireless subsystems are provided. The present invention discloses alternative symbol to chip mappings that are orthogonal or nearly orthogonal to the N/2 unused chip sequences defined by a standard transmission protocol. The present invention is advantageous because it provides for an increased number of users and better reliability for wireless subsystems operating in increasingly overcrowded frequency bands. Other advantages of the present invention include a reduction in the negative effects of clear channel assessment including delayed or cancelled signal transmission and interference for wireless subsystems that transmit time-sensitive data.

Abstract: A method of simulating performance characteristics of a product to be manufactured includes identifying a plurality of simulation modules each representative of one or more components of the product. The method also includes linking the plurality of simulation modules together to provide a model capable of generating an output associated with one or more performance characteristics of the product and running at least some of the simulation models in parallel to provide performance information related to the one or more performance characteristics of the product. The method can also include outputting the performance information.

Abstract: An anti-slipping attachment for shoes is disclosed in two embodiments, one for both the sole and heel and the other for the sole alone. The sole portion of each embodiment includes a pair of overlapped plates pivotted together at their rear ends permitting adjustment of the width of the device at its front end. One plate includes an integral tab bent over the other plate to serve as a guide and the other plate includes an integral stop which cooperates with the tab to limit the maximum angular displacement of the plates. The plates, which have integral teeth and integral apertured ears for receiving a strap, are each formed by bending from identical sheet metal blanks.

Abstract: A tool for applying ties to bundles comprises a magazine chamber leading directly to the path of a reciprocable carriage adapted on forward movement to engage the leading tie in the magazine and drive it into a loop guide releasably disposed about a bundle. The tie tail is reversed about the bundle by the loop guide under the driving force of the carriage to pass through the head of the tie in a reverse direction to engage a gripper in the carriage. Reversal of the carriage tensions the tie about the bundle and repositions the carriage in a starting position in relation to the magazine. A shear device operating transversely of the carriage path and disposed at its forward end severs the tie tail adjacent the tie head, and opens the loop guide for removal of the bundle.

Abstract: A flexible plastics bundle tie comprising a strap extending from an apertured frame for passage of the strap looped back on itself, is provided at the frame with means for releasably engaging the frame of a similar tie to form a stack in which the straps are generally parallel. The means may comprise a tongue projecting from the frame on a side opposite to the strap engaging the aperture of the adjacent frame.