A tracking system includes one or more cameras and machine-vision processors configured to track the position of a plurality of optical tracking emitters. Each of the plurality of tracking emitters is modulated with a message. The message includes identification information for any of the plurality of tracking cameras receiving the message, so that the cameras can track the location of each emitter.

A dual chirp modulation technique is presented for use in telecommunications. The technique includes: generating a first chirp signal ramping at a first rate; generating a second chirp signal ramping at a second rate which differs from the first rate; combining the first chirp signal with the second chirp signal to form a dual chirped signal; and transmitting, the dual chirped signal from a transmitter to a receiver. At least one first chirp signal, the second chirp signal or the dual chirped signal is preferably modulated. At the receiver, the dual chirped signal is correlated with a local chirp signal to help reject out-of-band interferers.

A dual chirp modulation technique is presented for use in telecommunications. The technique includes: generating a first chirp signal ramping at a first rate; generating a second chirp signal ramping at a second rate which differs from the first rate; combining the first chirp signal with the second chirp signal to form a dual chirped signal; and transmitting, the dual chirped signal from a transmitter to a receiver. At least one first chirp signal, the second chirp signal or the dual chirped signal is preferably modulated. At the receiver, the dual chirped signal is correlated with a local chirp signal to help reject out-of-band interferers.

A method for transmitting and receiving a radio signal in a wireless communication system and a device therefor are disclosed. A method for receiving, by a base station, a sounding reference signal (SRS) in the wireless communication system includes transmitting, to a user equipment (UE), configuration information for transmission of the SRS; and receiving, from the UE, the SRS transmitted based on the configuration information. The configuration information includes group hopping information and sequence hopping information for sequence hopping of the SRS. A sequence length of the SRS is based on a product of a number of candidates of the group hopping information and a number of candidates of the sequence hopping information. The number of candidates of the group hopping information and the number of candidates of the sequence hopping information are configured based on a number of neighboring cells of the base station.

A method for transmitting and receiving a radio signal in a wireless communication system and a device therefor are disclosed. A method for receiving, by a base station, a sounding reference signal (SRS) in the wireless communication system includes transmitting, to a user equipment (UE), configuration information for transmission of the SRS; and receiving, from the UE, the SRS transmitted based on the configuration information. The configuration information includes group hopping information and sequence hopping information for sequence hopping of the SRS. A sequence length of the SRS is based on a product of a number of candidates of the group hopping information and a number of candidates of the sequence hopping information. The number of candidates of the group hopping information and the number of candidates of the sequence hopping information are configured based on a number of neighboring cells of the base station.

A wireless networking system is provided. The wireless networking system includes a base station device including processing circuitry configured to detect a transmission rate from a portion of a preamble of an incoming packet transmission signal and adapt a radio configuration to receive a remainder of the incoming packet transmission signal at the transmission rate.

What is describes is a participant of a communication system, the participant being configured to transmit data using a first radio network and a second radio network in a frequency band, the participant being configured to transmit data in the first radio network according to a first time and/or frequency hopping pattern in a first frequency range of the frequency band, the participant being configured to transmit data in the second radio network according to a second time and/or frequency hopping pattern in a second frequency range of the frequency band, wherein the first time and/or frequency hopping pattern and the second time and/or frequency hopping pattern are different, wherein the first frequency range and the second frequency range overlap at least partially.

What is describes is a participant of a communication system, the participant being configured to transmit data using a first radio network and a second radio network in a frequency band, the participant being configured to transmit data in the first radio network according to a first time and/or frequency hopping pattern in a first frequency range of the frequency band, the participant being configured to transmit data in the second radio network according to a second time and/or frequency hopping pattern in a second frequency range of the frequency band, wherein the first time and/or frequency hopping pattern and the second time and/or frequency hopping pattern are different, wherein the first frequency range and the second frequency range overlap at least partially.

A method and system of communicating between a plurality of nodes are provided. The plurality of nodes are part of a cooperative broadcast multi-hop network that employs broadcast flood routing and multi-hop transmission using a direct-sequence spread-spectrum (DSSS) waveform.

The examples set forth herein describe methods, devices, and systems in which a wireless communication device that is a node of a vehicle ad-hoc network (VANET) spreads a reservation channel message with a spreading code, according to a codedivision multiple access (CDMA) scheme. The wireless communication device transmits a reservation channel transmission to at least one other wireless communication device, which is another node of the VANET, via time-frequency resources selected from a reservation channel resource pool. The reservation channel transmission contains the spread reservation channel message. In some examples, multiple reservation channel messages may be included in a single reservation channel transmission. In these examples, each reservation channel message is spread with a different orthogonal code before combining the reservation channel messages and spreading the combined reservation channel messages with a spreading code, according to a CDMA scheme.