Abstract:
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder for encoding service data, a mapper for mapping the encoded service data into a plurality of OFDM (Orthogonal Frequency Division Multiplex) symbols to build at least one signal frame, a frequency interleaver for frequency interleaving data in the at least one signal frame by using a different interleaving-seed which is used for every OFDM symbol pair comprised of two sequential OFDM symbols, a modulator for modulating the frequency interleaved data by an OFDM scheme and a transmitter for transmitting the broadcast signals having the modulated data.
Abstract:
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder for encoding DP (Data Pipe) data corresponding to each of a plurality of DPs, a mapper for mapping the encoded DP data onto constellations, a time interleaver for time interleaving the mapped DP data, a frame builder for building at least one signal frame including the time interleaved DP data, a phase distortion unit for performing a phase distortion of at least one broadcast signal having the built at least one signal frame, a modulator for modulating the at least one broadcast signal by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter for transmitting the at least one broadcast signal.
Abstract:
The present disclosure relates to a terminal-based positioning method and device and, the terminal-based positioning method performed by a terminal in a wireless communication system, according to one aspect, can comprise the steps of: measuring a time difference of arrival (TDoA) for each distributed antenna on the basis of signals received from an anchor node through a plurality of distributed antennas; setting the relative position for each distributed antenna on the basis of a reference point preset in correspondence with the terminal; and determining an absolute position, which is the position of the reference point, on the basis of the TDoA measured for each distributed antenna and the relative position set for each distributed antenna.
Abstract:
In a method for user equipment in a wireless communication system according to an aspect of the present disclosure, a physical sidelink control channel (PSCCH) is received from a plurality of anchor nodes (ANs) on a plurality of subchannels, wherein each of the plurality of subchannels comprises at least one resource block, and, on the basis of the PSCCH, a plurality of positioning reference signals (PRSs) are received from the plurality of ANs, a subchannel identification (ID) is allocated to each of the plurality of subchannels, and the PRS pattern of each of the plurality of PRSs is mapped to the subchannel ID.
Abstract:
A method for transmitting, by a user equipment, a message for a vulnerable road user (VRU) in a wireless communication system is disclosed. The method may comprise: receiving a first message including an expected time to pass (TTP) of a vehicle regarding a predetermined location on an expected route of the VRU; on the basis of i) the first message and ii) the TTP of the VRU regarding the predetermined location, generating a virtual VRU at the predetermined location; and transmitting a second message including the virtual VRU.
Abstract:
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals, the apparatus comprises an encoder to encode service data corresponding to a number of physical paths, a time interleaver to time interleave the encoded service data in each physical path, a frame builder to build at least one signal frame including the time interleaved service data, a modulator to modulate data in the built at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter to transmitting the broadcast signals having the modulated data.
Abstract:
A broadcast signal receiver includes a tuner for tuning a broadcast signal, a reference signal detector for detecting pilots from the tuned broadcast signal, a de-framer for de-framing a signal frame of the broadcast signal and deriving service data based on a number of carriers of the signal frame, and a decoder for performing error correction process on the derived service data.
Abstract:
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder for encoding service data, a mapper for mapping the encoded service data into a plurality of OFDM (Orthogonal Frequency Division Multiplex) symbols to build at least one signal frame, a frequency interleaver for frequency interleaving data in the at least one signal frame by using a different interleaving-seed which is used for every OFDM symbol pair comprised of two sequential OFDM symbols, a modulator for modulating the frequency interleaved data by an OFDM scheme and a transmitter for transmitting the broadcast signals having the modulated data, wherein the different interleaving-seed is generated based on a cyclic shifting value and wherein an interleaving seed is variable based on an FFT size of the modulating.
Abstract:
A method and an apparatus for transmitting broadcast signals thereof are disclosed. The method for transmitting broadcast signals including encoding DP (Data Pipe) data carrying at least one service, mapping the encoded DP data onto constellations, time interleaving the mapped DP data, building a signal frame including the time interleaved DP data, modulating data in the built signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme, and transmitting the broadcast signals having the modulated data, wherein the broadcast signals are carried in consecutive super frames, wherein each of the super frames includes multiplexed signal frames for different service in a time domain, wherein the signal frame includes a preamble located at the beginning of the at least one signal frame, wherein the preamble includes signaling information for identifying the signal frame.
Abstract:
A method is provided for transmitting broadcast signals. Service data is encoded. The encoded service data is mapped to symbols onto constellations. Data cells are frequency interleaved in a symbol among the symbols in at least one frame unit using an interleaving sequence. The interleaving sequence is generated based on a main interleaving-sequence and a symbol offset value. The interleaving sequence is generated by operating the main interleaving-sequence with the symbol offset value. The data cells are included in the symbol with a symbol index and a frame unit with a frame unit index. The frequency interleaving of the data cells operates on a frame basis. The frequency interleaving of the data cells is reset when a first frame unit is changed to a second frame unit. Data is modulated in the at least one frame unit by an Orthogonal Frequency Division Multiplexing (OFDM) scheme. The broadcast signals carrying the modulated data are transmitted.