A signal transmission system comprising a power amplifier, configured to amplify a signal; an antenna port, controllably connectable by a switch in series to an output of the power amplifier, and configured to be coupled to an antenna; a load component, controllably connectable by the switch in series to the output of the power amplifier; wherein the switch is disposed between the power amplifier and the antenna port and the load, to selectively connect the load component or the antenna port to the power amplifier according to a first operational mode and a second operational mode, and wherein the first operational mode is a mode in which the power amplifier is electrically connected to the antenna port and disconnected from the load component, and the second operational mode is a mode in which the power amplifier is electrically connected to the load component and disconnected from the antenna port.

Methods, systems, and devices for wireless communications are described. A transmitting device may identify synchronization signals and a set of frequency hopping channels for communications as part of a discovery reference signal (DRS) in an anchor channel. The set of frequency hopping channels may include a sequence to indicate an order for utilizing each hopping channel of the set of hopping channels. In some cases, the hopping sequence may be a pseudo random sequence. Additionally, the hopping sequence may defined such that a non-repeating hopping sequence or pattern which visits all hopping frequencies before revisiting the same frequency is utilized. As such, each hopping channel may be utilized an equal number of times within a period of time and have an approximately equal occupancy time to the other hopping channels.

The invention relates to a method for the telecommunication of data by frequency hopping in a first frequency band, wherein the frequency hops follow a predetermined time sequence, known at least to a data transmitter, characterized in that it comprises the following steps implemented by said data transmitter: defining, from a pseudo-random sample, successive values of respective differences in frequency (fs1, fs2, fs3, . . . ; fd1, fd2, fd3, etc.) in order to determine the hopping time sequence starting at a first frequency (f1), transmitting to at least one data receiver at a first frequency (f1), said first frequency being randomly selected (S1) within the first frequency band, then at successive frequencies (S5) which, starting at the first frequency, comply with said successive values of respective differences in frequency, said successive values of differences in frequency defining, at reception, a succession of reception frequencies for useful data to be received from said data transmitter.

A receiver baseband processor and method for performing preamble detection and Time-of-Arrival, ToA, estimation for a single-tone frequency hopping random access preamble. The processor FFT processes a received signal and identifies logical tones. For each logical tone, the processor reads received symbols; determines a ToA estimate; forms a statistic based on the ToA estimate; compares the statistic to a preamble threshold; and when the statistic is greater than or equal to the threshold, determines a preamble is present and utilizes the ToA estimate for a timing advance command.

The invention discloses a cyclic-Frequency shift orthogonal frequency division multiplex spread spectrum device, comprising: at least one communication device for performing the conversion between a series of bits and a frequency domain symbol out of a plurality of frequency combination patterns; wherein different patterns correspond to different bit values; and the device forms a cyclic frequency shift value utilizing a frequency reordering, each of the cyclic frequency shift values corresponding to a frequency combination pattern.

A signal transmission system comprising a power amplifier, configured to amplify a signal; an antenna port, controllably connectable by a switch in series to an output of the power amplifier, and configured to be coupled to an antenna; a load component, controllably connectable by the switch in series to the output of the power amplifier; wherein the switch is disposed between the power amplifier and the antenna port and the load, to selectively connect the load component or the antenna port to the power amplifier according to a first operational mode and a second operational mode, and wherein the first operational mode is a mode in which the power amplifier is electrically connected to the antenna port and disconnected from the load component, and the second operational mode is a mode in which the power amplifier is electrically connected to the load component and disconnected from the antenna port.

A method and system for enabling the determination of a position of a receiver within a space includes transmitting a beacon signal from each of a plurality of beacon devices located at different locations within the space. The beacon signal transmitted from each beacon device has a unique information component and may have a unique frequency pattern of multiple frequencies. Each beacon signal can be distinguishable from the beacon signals transmitted from any other of the beacon devices based on the combination of its unique information component and its unique frequency pattern. The beacon signals are received at a receiver. At the receiver, for each beacon signal of a working subset, time-delay information of the received beacon signal is determined and multilateration is applied to determine the position of the receiver based on the location of each beacon device of the working subset.

A receiver baseband processor and method for performing preamble detection and Time-of-Arrival, ToA, estimation for a single-tone frequency hopping random access preamble. The processor FFT processes a received signal and identifies logical tones. For each logical tone, the processor reads received symbols; determines a ToA estimate; forms a statistic based on the ToA estimate; compares the statistic to a preamble threshold; and when the statistic is greater than or equal to the threshold, determines a preamble is present and utilizes the ToA estimate for a timing advance command.

The invention discloses a cyclic-Frequency shift orthogonal frequency division multiplex spread spectrum device, comprising: at least one communication device for performing the conversion between a series of bits and a frequency domain symbol out of a plurality of frequency combination patterns; wherein different patterns correspond to different bit values; and the device forms a cyclic frequency shift value utilizing a frequency reordering, each of the cyclic frequency shift values corresponding to a frequency combination pattern.

Methods, apparatus, and processor-readable storage media for pairing multiple devices into a designated group for a communication session are provided herein. An example computer-implemented method includes processing, via at least a portion of multiple processing devices, information associated with a network in connection with one or more device pairing requests from one or more of the processing devices; implementing, via at least one the multiple processing devices, a pairing algorithm, wherein the pairing algorithm comprises searching for one or more of the processing devices, in accordance with one or more temporal values associated with the at least one processing device and at least one of the one or more device pairing requests corresponding thereto, and one or more pairing parameters; and automatically pairing, via the network and based on the pairing algorithm, the at least one processing device to one or more of the processing devices.