Abstract: In a cognitive radio, a method of establishing an operational policy for use in a Peer-to-Peer (P2P) group, wherein the policy can be described by layers of policy parameters with progressively higher layers having a progressively increasing number of parameters, involves determining that a policy change is to be made from a current policy; requesting policy information from at least one P2P group member; receiving a policy description from the at least one P2P group member; and implementing a change in the lowest layer policy parameter to establish a new operational policy.

Abstract: In a cognitive radio, a method of establishing an operational policy for use in a Peer-to-Peer (P2P) group, wherein the policy can be described by layers of policy parameters with progressively higher layers having a progressively increasing number of parameters, involves determining that a policy change is to be made from a current policy; requesting policy information from at least one P2P group member; receiving a policy description from the at least one P2P group member; and implementing a change in the lowest layer policy parameter to establish a new operational policy.

Abstract: An electronic pressure transducer for providing a pressure-indicative analog output signal includes a capacitive pressure sensing oscillator having a frequency dependent on an applied pressure. A combining circuit combines the oscillator signal with a constant frequency signal generated by a reference oscillator to generate a difference signal having a duty cycle dependent on the frequency difference between the oscillator signals. The difference signal is applied to an integrating circuit and amplified by a variable-gain output amplifier to develop the pressure-indicative analog output signal. A pair of D-type flip-flops and an EXCLUSIVE OR logic gate in the combining circuit enable the combining circuit to function with oscillator frequency ratios of 1:1 to 2:1, thereby enabling the capacitive pressure sensing element of the pressure sensing oscillator to operate over a wider range of sensitivities.