Abstract: In one example, a continuous-wave radar circuit receives reflection signals, computer processing circuitry processes data corresponding to the reflection signals, and emulation circuitry introduces a plurality of diagnostic data sets into the radar circuit to cause the radar circuit to process simulated reflection signals as though the simulated reflection signals are reflections from objects remote from the apparatus. The radar circuit may receive the reflection signals in response to chirp sequences actually transmitted as reflections from objects.

Abstract: Aspects of the present disclosure are directed to use with communications that may involve repetitive communications. As may be implemented in accordance with one or more embodiments, a subset of symbols in a current data message (130/131) are used with a corresponding subset of symbols in a previous data message (120/121), to ascertain whether the current data message is a repetition of the previous data message. This may involve, for instance, generating a resemblance metric to represent semblance between a subset the data symbols of the current data message and a subset the data symbols of the previous data message (102). The resemblance metric can be used in determining whether the current data message is a repetition of the previous data message. This approach may be useful, for example, in ascertaining whether the current message is a repetition without necessarily decoding the message.

Abstract: In connection with an RF communication system, exemplary aspects may involve a method and apparatus for use in a communication system in which a RF receiver may be detecting and processing a first signal in an RF channel. Thereafter, a second received signal may be detected, with the second received signal being assessed, by receiver circuitry, as stronger than the first received signal. In response to the assessment of the second received signal being stronger than the first received signal, the RF receiver circuitry may adjust the gain or signal amplification circuitry for continuing to process the second, stronger, received signal in place of the first, weaker, received signal.

Abstract: Aspects of the present disclosure are directed to ascertaining whether data messages are repetitions of a previous data message. As may be implemented in accordance with one or more embodiments characterized herein, data packets (130/131) are received (102) and which use a first time delay relative to transmission of a previous data packet (120/121) by a different transmitter. Repetitions (110A/111A) of data packets are also received (102), and which use a second time delay relative to transmission of a previous data packet (110/111) by the same transmitter. The second time delay is less than the first time delay. The received packet is identified (102) as being a repetition of an immediately-previous data packet based on a time delay between the data packet and the immediately-previous data packet, relative to the first and second time delays.

Abstract: In one example, a continuous-wave radar circuit receives reflection signals, computer processing circuitry processes data corresponding to the reflection signals, and emulation circuitry introduces a plurality of diagnostic data sets into the radar circuit to cause the radar circuit to process simulated reflection signals as though the simulated reflection signals are reflections from objects remote from the apparatus. The radar circuit may receive the reflection signals in response to chirp sequences actually transmitted as reflections from objects.

Abstract: Embodiments of a device and method are disclosed. In an embodiment, a method of wireless communications involves at a receiver, receiving a first packet, subsequently, at the receiver, receiving a second packet, and determining whether the second packet is a repetition of the first packet based on packet acquisition information associated with the first and second packets.

Abstract: Embodiments of a device and method are disclosed. In an embodiment, a method of wireless communications involves at a receiver, receiving a first packet, subsequently, at the receiver, receiving a second packet, and determining whether the second packet is a repetition of the first packet based on wireless communications channel estimation information associated with the first and second packets.

Abstract: Embodiments of a device and method are disclosed. In an embodiment, a method of wireless communications involves at a receiver, receiving a first packet, subsequently, at the receiver, receiving a second packet, and determining whether the second packet is a repetition of the first packet based on packet acquisition information associated with the first and second packets.

Abstract: Embodiments of a device and method are disclosed. In an embodiment, a method of wireless communications involves at a receiver, receiving a first packet, subsequently, at the receiver, receiving a second packet, and determining whether the second packet is a repetition of the first packet based on wireless communications channel estimation information associated with the first and second packets.

Abstract: In connection with an RF communication system, exemplary aspects may involve a method and apparatus for use in a communication system in which a RF receiver may be detecting and processing a first signal in an RF channel. Thereafter, a second received signal may be detected, with the second received signal being assessed, by receiver circuitry, as stronger than the first received signal. In response to the assessment of the second received signal being stronger than the first received signal, the RF receiver circuitry may adjust the gain or signal amplification circuitry for continuing to process the second, stronger, received signal in place of the first, weaker, received signal.

Abstract: An intelligent transportation system, ITS, station (600) comprising: a host processor (640); and a memory (664) operably coupled to the host processor (640). The host processor (640) is configured to: perform precomputation of certificate data associated with an identity to be verified on a per identity basis; store precomputation data for a plurality of verified identities in the memory (664); and extract stored precomputation data from memory (664) and use the stored precomputation data to perform accelerated verification of subordinate certificates.

Abstract: Aspects of the present disclosure are directed to use with communications that may involve repetitive communications. As may be implemented in accordance with one or more embodiments, a subset of symbols in a current data message (130/131) are used with a corresponding subset of symbols in a previous data message (120/121), to ascertain whether the current data message is a repetition of the previous data message. This may involve, for instance, generating a resemblance metric to represent semblance between a subset the data symbols of the current data message and a subset the data symbols of the previous data message (102). The resemblance metric can be used in determining whether the current data message is a repetition of the previous data message. This approach may be useful, for example, in ascertaining whether the current message is a repetition without necessarily decoding the message.

Abstract: Aspects of the present disclosure are directed to ascertaining whether data messages are repetitions of a previous data message. As may be implemented in accordance with one or more embodiments characterized herein, data packets (130/131) are received (102) and which use a first time delay relative to transmission of a previous data packet (120/121) by a different transmitter. Repetitions (110A/111A) of data packets are also received (102), and which use a second time delay relative to transmission of a previous data packet (110/111) by the same transmitter. The second time delay is less than the first time delay. The received packet is identified (102) as being a repetition of an immediately-previous data packet based on a time delay between the data packet and the immediately-previous data packet, relative to the first and second time delays.

Abstract: A system includes a secure processor and an unsecure processor. The secure processor is configured to: split a secure scalar K into m2 random values ki, where i is an integer index; randomly select m1-m2 values ki for the indices m2<i?m1; select m1 mask values ?i; compute m1 residues ci based upon random residues ai, ??(i)?1, and k?(i), wherein ?(i) is a random permutation; compute m1 elliptic curve points Gi based upon random residues ai and an elliptic point to be multiplied; receive m1 elliptic curve points; and compute the elliptic curve scalar multiplication by combining a portion of the received elliptic curve points and removing the mask values ?i from the portion of the received elliptic curve points. The unsecure processor is configured to: receive m1 residues ci and elliptic curve points Gi; compute m1 elliptic curve points Pi based upon the m1 residues ci and elliptic curve points Gi; and send the m1 elliptic curve points Pi to the secure processor.

Abstract: Embodiments include a method of adding first and second binary numbers having C bits and divided into D words to provide a third binary number in E successive adding operations, C, D and E being plural positive integers, the method comprising: a first group of D adding operations adding together respective words of the first and second binary numbers to provide D sum and carry outputs ranging from a least significant to a most significant sum and carry output; one or more subsequent groups of adding operations adding together sum and carry outputs from an immediately preceding group of adding operations, a final group of the one or more subsequent groups resulting in the third binary number consisting of the sum outputs from the final group and a carry from the most significant carry output of the final group, wherein E is less than D.

Abstract: A wireless receiver for a distributed antenna diversity receiver apparatus comprising a pre-combining component arranged to receive an RF signal from an antenna and to recover and output an information signal contained within the received RF signal, and a combined-signal component arranged to receive the recovered information signal output by the pre-combining component of the wireless receiver and a further recovered information signal from a further wireless receiver and to perform diversity combining of the recovered information signals to obtain and output an enhanced information signal. The wireless receiver further comprises a monitoring component arranged to receive intra-packet channel reliability parameters for the wireless receiver and for the further wireless receiver, determine whether to assign a new master receiver for the distributed antenna diversity receiver apparatus based on the received intra-packet reliability parameters.

Abstract: An intelligent transportation system, ITS, station (600) comprising: a host processor (640); and a memory (664) operably coupled to the host processor (640). The host processor (640) is configured to: perform precomputation of certificate data associated with an identity to be verified on a per identity basis; store precomputation data for a plurality of verified identities in the memory (664); and extract stored precomputation data from memory (664) and use the stored precomputation data to perform accelerated verification of subordinate certificates.

Abstract: A wireless receiver for a distributed antenna diversity receiver apparatus comprising a pre-combining component arranged to receive an RF signal from an antenna and to recover and output an information signal contained within the received RF signal, and a combined-signal component arranged to receive the recovered information signal output by the pre-combining component of the wireless receiver and a further recovered information signal from a further wireless receiver and to perform diversity combining of the recovered information signals to obtain and output an enhanced information signal. The wireless receiver further comprises a monitoring component arranged to receive intra-packet channel reliability parameters for the wireless receiver and for the further wireless receiver, determine whether to assign a new master receiver for the distributed antenna diversity receiver apparatus based on the received intra-packet reliability parameters.

Abstract: Embodiments include a method of adding first and second binary numbers having C bits and divided into D words to provide a third binary number in E successive adding operations, C, D and E being plural positive integers, the method comprising: a first group of D adding operations adding together respective words of the first and second binary numbers to provide D sum and carry outputs ranging from a least significant to a most significant sum and carry output; one or more subsequent groups of adding operations adding together sum and carry outputs from an immediately preceding group of adding operations, a final group of the one or more subsequent groups resulting in the third binary number consisting of the sum outputs from the final group and a carry from the most significant carry output of the final group, wherein E is less than D.

Abstract: A method and system for power management is provided. To control power supplied to a second electronic device (106), an electronic system (100) comprises a power management subsystem (110), a first electronic device (102); The power management subsystem (110) monitors the power consumed by the first electronic device (102) to control the power supplied to the second electronic device (106). A method for power management of a second electronic device (106) is provided. A power management subsystem (110) is provided.