Abstract: Described are a method and system for secure transmission of data through a network. A subcarrier sequence for data transmission is generated. The subcarrier sequence designates at least one subcarrier from a number of orthogonal subcarriers for each of a plurality of intervals in a time sequence. The subcarrier sequence is provided to a receiver. A data signal that includes the subcarriers identified in the subcarrier sequence modulated according to the data is transmitted from a transmitter to the receiver. For additional security, the subcarrier sequence can be transmitted to the receiver using a communications channel that is separate from the communications channel for the data signal. The data signal is detected at the receiver and demodulated according to the subcarrier sequence.

Abstract: A technique for improved mapping of the contacts of a PLD to the contacts of one or more other electronic components are provided. In one particular exemplary embodiment, the technique may be realized as a method for mapping contacts of a programmable logic device (PLD) to an electronic component in a signal routing device having one or more layers. The method comprises assigning a set of one or more contacts of the PLD to one or more respective contacts of the electronic component based at least in part on a pattern of electrically conductive traces routed from respective contacts of the electronic component via one or more channels formed at one or more layers of the signal routing device.

Abstract: A technique for enhancing circuit density and performance is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for enhancing circuit density and performance of a microelectronic module. The method may comprise forming a discrete package, wherein the discrete package comprises one or more passive devices that are desirable for the performance of the microelectronic module. The method may also comprise coupling the discrete package to the microelectronic module.

Abstract: A technique for filter-enhanced clock synchronization is disclosed. In one particular exemplary embodiment, the technique may be realized by/as a method for filter-enhanced clock synchronization. The method comprises subjecting a clock error signal to a first exponentially weighted moving average (EWMA) filter to generate a first output signal, where the first EWMA filter comprises a first gain element. And the method further comprises subjecting the first output signal to a second EWMA filter to generate a second output signal, where the second EWMA filter comprises a second gain element and the second EWMA filter is coupled with a feedback loop having a delay element and a summing junction.

Abstract: A technique for reducing via capacitance is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for reducing via capacitance. The method may comprise forming, in a circuit board, a via hole that bridges a first trace and a second trace. The method may also comprise forming a channel in a sidewall of the via hole. The method may further comprise filling the via hole and the channel with a conductive material. The method may additionally comprise removing the conductive material from the via hole without depleting the channel, thereby forming an interconnect that couples the first trace to the second trace.

Abstract: Redundant wireless links in a meshed backhaul network may be used to improve quality of service on the backhaul network by confining knowledge of the duality to the attached network elements. Globally, an aggregate bandwidth of the redundant wireless links may be advertised to allow network level routing to treat the redundant links as a single logical link. At the link level, however, the network elements may differentiate between different types of traffic to provide preferential service to particular types of traffic. By using different physical links within the logical link for particular types of traffic, the quality of service for that type of traffic may be improved by not causing different types of traffic to compete for the same bandwidth. The redundant links may be interfaced using a tower network including a radio accessed router optionally powered using solar power, to isolate the tower network from ground equipment.

Abstract: Techniques for reducing the number of layers in a multilayer signal routing device are disclosed. The technique may be realized as a method for routing one or more conductive traces between a plurality of electronic components of a multilayer signal routing device. The method comprises forming a first inter-component channel at a first routing layer of the multilayer signal routing device, the first inter-component channel extending between a first set of two or more electronic components of the plurality of electronic components and having a first orientation and forming a second inter-component channel at a second routing layer of the multilayer signal routing device, the second inter-component channel extending between a second set of two or more electronic components of the plurality of electronic components and having a second orientation different from the first orientation.

Abstract: A technique for reducing via capacitance is disclosed. In one particular exemplary embodiment, the technique may be realized as a method for reducing via capacitance. The method may comprise forming, in a circuit board, a via hole that bridges a first trace and a second trace. The method may also comprise forming a channel in a sidewall of the via hole. The method may further comprise filling the via hole and the channel with a conductive material. The method may additionally comprise removing the conductive material from the via hole without depleting the channel, thereby forming an interconnect that couples the first trace to the second trace.

Abstract: Redundant wireless links in a meshed backhaul network may be used to improve quality of service on the backhaul network by confining knowledge of the duality to the attached network elements. Globally, an aggregate bandwidth of the redundant wireless links may be advertised to allow network level routing to treat the redundant links as a single logical link. At the link level, however, the network elements may differentiate between different types of traffic to provide preferential service to particular types of traffic. By using different physical links within the logical link for particular types of traffic, the quality of service for that type of traffic may be improved by not causing different types of traffic to compete for the same bandwidth.

Abstract: Exemplary techniques for providing an embedded preemphasis circuit and/or a deemphasis circuit in a printed circuit board (PCB) or other circuit device are disclosed. In particular, a technique for preemphasizing and/or deemphasizing transmitted signals in a PCB-based circuit is provided. The technique may be realized as a preemphasis circuit for preemphasizing a signal being transmitted from a signal source to a signal destination. The preemphasis circuit comprises a printed circuit board (PCB), a resistor embedded in the PCB and having a first terminal electrically connected to the signal source and a second terminal electrically connected to the signal destination, and a capacitor embedded in the PCB and having a first terminal electrically connected to the signal source and a second terminal electrically connected to the signal destination.

Abstract: Techniques for improved contact mapping in circuit devices are disclosed. In one particular exemplary embodiment, a technique may be realized as a circuit device comprising a circuit chip having a plurality of electrical contacts positioned at a surface of the circuit chip so as to form one or more channels at the surface, the one or more channels being substantially devoid of electrical contacts such that one or more corresponding channels are formed in a chip carrier for routing electrically conductive traces from one or more of the plurality of electrical contacts on a routing layer of the chip carrier.