A System-on-a-Chip (SoC) for receiving telemetry messages over a radio-frequency (RF) channel is provided. The SoC comprises at least one RF module; at least one module for conversion of the signal from an analog form to a digital form; at least one input signal digital processing unit for filtering the signal from the RF module; and at least one memory unit. The SoC also comprises at least one processor for executing time shifting and frequency shifting of the signal. The processor is configured to process each time- and frequency-shifted signal by consecutive Fourier transforms, such that a first time element of each next transform is placed immediately after a last element of a previous transform. The processor is also configured to receive the signal, which signal was subjected to a carrier frequency change during transmission thereof, the signal having transmission frequencies that are within at least two processed spectrum sections.

A method to receive telemetry messages over an RF channel, the method implemented by a system on a chip, in which a signal is received from the output of an input RF module, the received signal is offset in time and frequency wherein the signal, at first, is offset in time so that the offset magnitudes uniformly fill the length of one data bit, then, the signal is offset in frequency so that the offset magnitudes uniformly fill the space between the Fourier transform subcarriers, with the frequency offsets being independent of the time offsets; each signal processed at the preceding step is subjected to sequential Fourier transforms, with the first time element of each next transform immediately following the last element of the preceding transform; all messages are demodulated independently. The technical result consists in that messages can be received over multiple channels at multiple rates.

Methods, systems, and devices for wireless communications are described. A UE may use different modulation schemes, or different modulators, for a single data stream. The set of modulators may be based on a linear combination of a function of encoded bits to be transmitted. In some cases, the UE may use a different permutation or interleaving of the function of bits with the same linear function to generate a different set of modulators. The UE may use a combination of any one or more of the described techniques for generating a set of modulators. Different modulators may be cyclically repeated over time. The UE may apply a device-specific scrambling sequence and transmit the modulated symbols on an uplink channel. The base station may use matched filters and an element-wise estimator (ESE) to compute log-likelihood ratios (LLRs) for each bit of each UE in a received signal.

Binary forward error correcting (FEC) encoding is applied to a stream of input bits, to generate a stream of coded bits. The coded bits are mapped to multiple binary streams. In some embodiments, at least one coded bit is mapped to more than one of the binary streams and none of the binary streams are identical to each other. Stream-specific modulations are applied to the binary streams. Non-binary FEC encoding could be applied after the stream-specific modulations.

A method to receive telemetry messages over an RF channel, the method implemented by a system on a chip, in which a signal is received from the output of an input RF module, the received signal is offset in time and frequency wherein the signal, at first, is offset in time so that the offset magnitudes uniformly fill the length of one data bit, then, the signal is offset in frequency so that the offset magnitudes uniformly fill the space between the Fourier transform subcarriers, with the frequency offsets being independent of the time offsets; each signal processed at the preceding step is subjected to sequential Fourier transforms, with the first time element of each next transform immediately following the last element of the preceding transform; all messages are demodulated independently. The technical result consists in that messages can be received over multiple channels at multiple rates.

A transmitting apparatus includes an OFDM modulator that generates a first modulation symbol by modulating a first information signal using a first modulation scheme, a signal point of the first modulated information signal being arranged at a first position in an in-phase quadrature-phase plane and a second modulation symbol by modulating a second information signal using the first modulation scheme, and by changing a second position at which a signal point of the modulated second information signal is arranged to a third position in the in-phase quadrature-phase plane, wherein the third position is different from the first position. An OFDM modulation signal includes the first modulation symbol and the second modulation symbol, wherein the OFDM modulation signal comprises a plurality of subcarriers. A transmitter transmits the OFDM modulation signal.

An imaging system that utilizes deterministic bit sequences modulated onto an in-phase component of a carrier frequency and continuously transmitted via a transducer and received for imaging a medium and/or environment is provided. The received signal is demodulated by an in-phase demodulator and a quadrature demodulator and the demodulated components are processed to provide a spatial mapping of a medium or environment being imaged.

Digital mobile communications devices and methods for processing, modulation and demodulation, transmission and reception of spread spectrum signals, Orthogonal Frequency Division Multiplexed (OFDM) signals and conversion of spread spectrum signals into OFDM signals. Received spread spectrum signals from 3G cellular systems are converted into OFDM signals and transmitted in a Wi-Fi network. Received OFDM signals, received in a cellular system in a first RF frequency band, are demodulated and in a repeater mode are re-transmitted in a cellular system in a second OFDM radio frequency band. One or more receivers and demodulators for receiving demodulating and processing received signals into location finder information. A video camera in mobile device generates video signal and transmits video signal with location finder information signal.

Mobile Networks using Orthogonal Frequency Division Multiplex (OFDM) and or spread spectrum modulation and demodulation techniques process in mobile devices spread spectrum signals into OFDM signals. A first mobile device receives and demodulates a spread spectrum modulated signal into a baseband spread spectrum signal and processes the baseband spread spectrum signal into a first OFDM signal. The first OFDM signal is transmitted to a second mobile device. In the second mobile device the received first OFDM signal is demodulated and processed into a second OFDM signal. The second OFDM signal is transmitted in the mobile network. Alternatively, the first mobile device receives, instead of a spread spectrum signal a modulated OFDM signal. The mobile device has a motion detector which generates a motion detector signal for control of the mobile device. The mobile device has a heart rate sensor and measures the heart rate.

Mobile Networks using Orthogonal Frequency Division Multiplex (OFDM) and or spread spectrum modulation and demodulation techniques process in mobile devices spread spectrum signals into OFDM signals. A first mobile device receives and demodulates a spread spectrum modulated signal into a baseband spread spectrum signal and processes the baseband spread spectrum signal into a first OFDM signal. The first OFDM signal is transmitted to a second mobile device. In the second mobile device the received first OFDM signal is demodulated and processed into a second OFDM signal. The second OFDM signal is transmitted in the mobile network. Alternatively, the first mobile device receives, instead of a spread spectrum signal a modulated OFDM signal. The mobile device has a motion detector which generates a motion detector signal for control of the mobile device. The mobile device has a heart rate sensor and measures the heart rate.