An information transmission method related to the field of communications technologies includes: generating an orthogonal frequency division multiplexing (OFDM) symbol, where the OFDM symbol includes a pi/2-BPSK modulated data signal and a pi/2-binary phase shift keying (BPSK) modulated phase tracking reference signal (PTRS); and sending the OFDM symbol. This method may be applied to an uplink single carrier transmission scenario or a downlink single carrier transmission scenario.

A generating unit that generates phase difference-added first data obtained by adding a phase change according to second data to a first signal indicating first data and a transmitting unit that transmits the phase difference-added first data are provided, and thus the first data and the second data can be transmitted through a simple configuration.

A broadcast receiving apparatus is provided. The broadcast receiving apparatus includes a first cover with a circuit board arranged therein, a second cover coupled onto the first cover, and at least one dipole antenna coupled to the circuit board and including an antenna pattern arranged on an inner surface of the second cover.

Provided are a data transmission method and apparatus, a sending end sends data to a receiving end on one or more orthogonal frequency division multiplexing (OFDM) symbols in a scheduling unit, and the receiving end receives data sent by the sending end on one or more OFDM symbols in the scheduling unit. A time length of the scheduling unit is a length of two long term evolution (LTE) OFDM symbols having normal cycle prefixes and a subcarrier spacing of 15 kHz, the scheduling unit is formed by seven or eight OFDM symbols having a subcarrier spacing of 60 kHz, the scheduling unit is maintained to be the seven OFDM symbols having a subcarrier spacing of 60 kHz and having new extended cycle prefixes.

Modulation apparatus, comprising: a first delta-sigma modulator for providing a digital in-phase signal based on a modulation of an in-phase component of a baseband signal; a second delta-sigma modulator for providing a digital quadrature signal based on a modulation of a quadrature component of the baseband signal; a first multiplicative combiner for combining a carrier signal with the digital in-phase signal and for providing an in-phase output signal; a second multiplicative combiner for combining the carrier signal with the digital quadrature signal and for providing a quadrature output signal; a delay component for generating a 90 phase shift between the in-phase output signal and the quadrature output signal; and an additive output combiner for combining the in-phase output signal and the quadrature output signal and generating a transmit signal.

A phase adjustment method, a related device, and a system, the method comprising obtaining phases and amplitudes of M symbols adjusting a phase of each of the M symbols to an adjusted phase, wherein the adjusting the phase of each of the M symbols to the adjusted phase includes performing at least one of setting the adjusted phase of the first symbol to the phase of the respective symbol, or setting the adjusted phase of a symbol greater than the first symbol according to the phase of the respective symbol and further according to a sum of phases of all symbols whose amplitudes are greater than an amplitude threshold in a group of one or more symbols from a first symbol to an (i1).sup.th symbol.

An information transmission method related to the field of communications technologies includes: generating an orthogonal frequency division multiplexing (OFDM) symbol, where the OFDM symbol includes a pi/2-BPSK modulated data signal and a pi/2-binary phase shift keying (BPSK) modulated phase tracking reference signal (PTRS); and sending the OFDM symbol. This method may be applied to an uplink single carrier transmission scenario or a downlink single carrier transmission scenario.

Provided is a data transmission method, the method includes: sending, by a sending end, data to a receiving end on one or more orthogonal frequency division multiplexing (OFDM) symbols in a scheduling unit, wherein a time length of the scheduling unit is a length of two long term evolution (LTE) OFDM symbols having normal cycle prefixes and a subcarrier spacing of 15 kHz, the scheduling unit is formed by seven or eight OFDM symbols having a subcarrier spacing of 60 kHz, or the scheduling unit is formed by a first gap and seven OFDM symbols having a subcarrier spacing of 60 kHz, or the scheduling unit is formed by a second gap and a second gap and eight OFDM symbols having a subcarrier spacing of 60 kHz.

In an aspect of the present invention, provided is a method for receiving an uplink signal by a base station (BS) in a wireless communication system where a reference signal is not used, including: obtaining information bits by demodulating and decoding a signal of a first user equipment (UE) that is modulated through a differential modulation scheme; estimating a channel between the first UE and the BS using the information bits; and performing successive interference cancellation (SIC) using the signal of the first UE restored through the channel estimation results and the information bits. In this case, the BS may estimate the channel between the first UE and the BS by assuming that an N.sup.th modulation symbol among modulation symbols of the information bits modulated through the differential modulation scheme is fixed to a predetermined constellation point.

Control circuitry for use in generating a local oscillator (LO) signal is provided. Synthesizer control circuitry is configured to control synthesizer circuity to generate an analog oscillator signal having a first frequency at which phase noise is minimized. DS control circuitry is configured to generate a control word or message to cause DS circuitry to generate a digital DS signal having a desired frequency when the DS circuitry is clocked by the oscillator signal having the first frequency. The desired frequency is proportional to the LO signal frequency. The digital DS signal generated by the DS circuitry is used to generate the LO signal. Thus the first frequency used to clock the DS circuitry is selected to optimize the oscillator rather than having some relationship to the LO frequency. In addition, a single synthesizer may be used in order to simultaneously generate many LO signals.