A decentralized communication device is provided that facilitates optimal positioning and orientation of one or more antennas for wireless communication with external devices. The decentralized communication device includes one or more master components and one or more slave components. The master and the slave components are physically separate and communicate wirelessly. In some embodiments the slave acts as a carrier frequency translator between the master and an external wireless device, where it communicates with the external device using a first frequency and communicates with the master using a second frequency which is different from the first frequency. In another embodiment the slave has most or all the physical layer to do the digital coding, digital modulation, data framing, data formatting and data packetization for communicating with an external device, in which case digital coding and digital modulation is distributed between the master and the slave.

According to an aspect of the present disclosure, a method of processing a data stream in a node unit included in a distributed antenna system includes: receiving frame layout information; changing a frame layout of a predetermined transmission frame based on the received frame layout information; and framing a plurality of data streams based on the changed frame layout.

An antenna assembly includes a base, a modem, a top lid and a housing. The base is composed of an aluminum material. The modem is disposed on the base. The top lid is for the base, and the top lid includes at least one antenna element disposed on an exterior surface. The housing covers the top lid and base. The top lid acts as an electro-magnetic barrier for the modem. A communication cable is connected to the modem at one end and extending to and connected to a vehicle internal router with a vehicle modem at the other end.

Crosstalk amelioration systems and methods in a radio frequency front end (RFFE) communication system provide a host or master of an RFFE bus to monitor a weakly-driven data line in the RFFE bus while a clock line is actively providing a clock signal for trigger events at one or more slaves on the RFFE bus. If the host detects noise on the data line that looks like a sequence start condition (SSC) signal, the host further signals on the data line to negate the impact of the false SSC signal and thus avoid misinterpretation by the slaves.

A transmission method in a first node device of a power line communication network, the first node device being configured so as to apply a reception mode for receiving data transmitted by a second node device in one or more separate frequency bands in parallel or else in a frequency band called “extended frequency band” comprising at least two separate frequency bands, the method comprising steps of de-interleaving the data read from a buffer memory in a first de-interleaving mode specific to reception in an extended frequency band and detecting whether the de-interleaved data are coherent and, if the obtained data are coherent, recording the de-interleaved data and, if not, de-interleaving data, for each of the separate frequency bands, in a de-interleaving mode specific to the separate frequency band for which the de-interleaving is performed and, if the de-interleaved data are coherent, recording the de-interleaved data.

Technology for a pre-amplification system for a modem is disclosed. The pre-amplification system can include an uplink-downlink signal path communicatively coupled between a first modem port of the modem and a first donor antenna port. The pre-amplification system can include a downlink signal path communicatively coupled between a second modem port of the modem and a second donor antenna port. The downlink signal path can include a pre-amplifier configured to amplify a received downlink cellular signal to produce an amplified downlink cellular signal to be directed to the second modem port.

In a PAM-N receiver, sampler reference levels, DC offset and AFE gain may be jointly adapted to achieve optimal or near-optimal boundaries for the symbol decisions of the PAM-N signal. For reference level adaptation, the hamming distances between two consecutive data samples and their in-between edge sample are evaluated. Reference levels for symbol decisions are adjusted accordingly such that on a data transition, an edge sample has on average, equal hamming distance to its adjacent data samples. DC offset may be compensated to ensure detectable data transitions for reference level adaptation. AFE gains may be jointly adapted with sampler reference levels such that the difference between a reference level and a pre-determined target voltage is minimized.

A method for receiving a modulated signal, includes the steps of receiving a signal modulated by a pulse position modulation (PPM) or a pulse width modulation (PWM) or a pulse amplitude modulation (PAM) or an on-off keying (OOK) amplitude modulation, corresponding to the transmission of a sequence of one or more consecutive digital symbols, squaring the received signal, projecting the square of the received signal onto multiple components of an analogue signal basis in order to obtain an analogue vector of dimension equal to the number of projection components, the components of the analogue signal basis being non-constant functions, digitizing the analogue vector into a digital vector, jointly demodulating the components of the digital vector by way of a maximum likelihood algorithm in order to estimate the transmitted sequence of one or more consecutive digital symbols.

Apparatus and methods for phase shifting are provided herein. In certain embodiments, a phase shifter includes a first port, a first controllable reflective load, a second port, a second controllable reflective load, and a pair of coupled lines that are electromagnetically coupled to one another. The pair of coupled lines includes a first conductive line between the first port and the first controllable reflective load and a second conductive line between the second controllable reflective load and the second port. At least one of the first controllable reflective load or the second controllable reflective load includes a switched transmission line load.

Aspects of the subject disclosure may include, a system for receiving second signals from a switch responsive to the switch receiving first signals a first waveguide system, wherein the first waveguide system facilitates generating the first signals responsive to receiving first electromagnetic waves that propagate along a transmission medium. The system further facilitates selecting a communication device according to the second signals, and transmitting a first wireless signal directed to the communication device, wherein the first wireless signal conveys first data supplied by the second signals. Other embodiments are disclosed.