A method and apparatus for providing a network profile used for testing of a device under test, the method comprising the steps of reading at least one field test log file recorded during a field test of said device under test, wherein the field test log file comprises network protocol messages and/or physical layer measurement data and extracting one or more protocol messages and/or payload data from the recorded field test log file including information concerning associated cells of a cellular network to generate automatically the network profile.

An apparatus includes a first half-cell, a second half cell and a multiplexer. The first half-cell may comprise a first input stage configured to present a first input signal to a first auto-zero stage. The second half-cell may comprise a second input stage configured to present a second input signal to a second auto-zero stage. The multiplexer may receive a first output from the first auto-zero stage, receive a second output from the second auto-zero stage and present one of the first output and the second output. The first half-cell and the second half-cell may implement a capacitive coupling. The capacitive coupling may provide a rail-to-rail common-mode input range. The first half-cell and the second half-cell may prevent a mismatch between data signals and clock signals. The first half-cell and the second half-cell may each be configured to implement a calibration when idle.

Embodiments of a station (STA) and method for communication in accordance with phase noise compensation are generally described herein. The STA may determine, based at least partly on one or more operational parameters, whether to perform phase noise compensation of data symbols of a received protocol data unit (PDU). For instance, the STA may compare the operational parameters with one or more thresholds. The STA may further determine a method of phase noise compensation based at least partly on one or more operational parameters. As an example, the STA may determine a type of interpolation to be used for an interpolation of phase noise estimates of pilot symbols to determine phase noise estimates of data symbols. Example operational parameters may include a signal quality metric, a carrier frequency offset (CFO) measurement and/or modulation and coding scheme (MCS).

According to one embodiment, a signal quality monitoring apparatus includes a signal processor, a comparator and a determiner. The processor obtains output signals from a first transmitter and a second transmitter which are mutually redundant and respectively reproduce digital broadcast signals based on a common origin signal, and generates a first signal based on the output signal from the first transmitter and a second signal based on the output signal from the second transmitter. The comparator compares the first signal and the second signal. The determiner determines a quality of the digital broadcast signal based on a result of the comparison.

A method for determining phase noise in a periodically modulated signal is described. The modulated signal is processed to generate a processed signal from the modulated signal. At least an approximate period of a modulation of the modulated signal is determined from the processed signal. The type of modulation of the modulated signal is determined from the processed signal. The modulated signal is demodulated based on the determined period and the determined type of modulation to generate a demodulated signal, and the phase noise is determined from the demodulated signal. Moreover, a measurement device is described.

Methods and systems for analyzing data are disclosed. An example method can comprise receiving a first data signal, decoding the first data signal, determining a second data signal based on the decoded first data signal, and determining a modulation error ratio based on a difference between the first data signal and the second data signal.

A communications device comprising receiver circuitry, transmitter circuitry and controller circuitry controlling the transmitter circuitry and the receiver circuitry to receive data in accordance with an automatic repeat request (ARQ) type protocol in which the data is received as a plurality of encoded data packets encoded with an error correction code and the transmitter circuitry transmits a feedback signal depending on whether each of the data encoded packets is estimated as having been decoded successfully by the receiver circuitry. The controller circuitry is configured to evaluate a quality measure of each encoded data packet and in response to the evaluated quality measure to transmit an early indication of the feedback signal to the wireless communications network, before the encoded data packet has been decoded by the error correction decoder.

Embodiments of a station (STA) and method for communication in accordance with phase noise compensation are generally described herein. The STA may determine, based at least partly on one or more operational parameters, whether to perform phase noise compensation of data symbols of a received protocol data unit (PDU). For instance, the STA may compare the operational parameters with one or more thresholds. The STA may further determine a method of phase noise compensation based at least partly on one or more operational parameters. As an example, the STA may determine a type of interpolation to be used for an interpolation of phase noise estimates of pilot symbols to determine phase noise estimates of data symbols. Example operational parameters may include a signal quality metric, a carrier frequency offset (CFO) measurement and/or modulation and coding scheme (MCS).

An interconnect apparatus performs real time scoring and data throughput measurement of parallel data channels. The scoring and measurement information is communicated as feedback across the interconnect. Processing circuitry in the interconnect apparatus routes data to channels that have the best performance and reduces the data rate on channels that have lower performance based on the feedback information. This provides a method of dynamic load balancing to achieve optimal video data rates in a dynamic impedance environment. The interconnect apparatus also adjusts phase and data sampling times for improved fidelity of data transported across the interface.

A transmitter of a communications system includes a first encoder configured to apply a shaping operation to a data signal to generate a shaped data signal, a second encoder configured to encode the shaped data signal according to a forward error correction (FEC) scheme to generate an encoded signal, and a constellation mapper configured to modulate the encoded signal to symbol values according to a modulation scheme to generate a corresponding symbol stream for transmission through the communications system. The shaping operation reduces average constellation energy for constellations of the modulation scheme.