摘要:
An optical phased board, a manufacturing method, and an optical phased array system are disclosed, and pertain to the field of beam scanning technologies. The optical phased board includes a plurality of optical waveguide layers (1) and a plurality of isolation layers (2). Each optical waveguide layer (1) includes a plurality of optical waveguides (11), and the plurality of optical waveguides (11) are arranged side by side; and the plurality of optical waveguide layers (1) and the plurality of isolation layers (2) are arranged in a superimposed manner, and each isolation layer (2) is located between two adjacent optical waveguide layers (1). The optical phased board includes a two-dimensional optical waveguide array, and therefore can perform two-dimensional beam scanning. In addition, in comparison with performing two-dimensional beam scanning by using a two-dimensional optical antenna array, resolution and a scanning angle of the beam scanning can be improved.
摘要:
An encoding method, an encoder, and a decoder for dynamic power consumption control are provided. The encoder includes a control unit, an initial encoding unit, and L incremental encoding units. The control unit is configured to enable only the initial encoding unit in an RS (N 0 , K) operating mode to perform encoding or enable only the initial encoding unit and first j incremental encoding units in the L incremental encoding units in an RS (N j , K) operating mode to perform encoding. The initial encoding unit is configured to perform RS FEC encoding on m(x) to obtain a quotient D 0 (x) and a remainder R 0 (x) of x N 0 -K m(x) relative to g 0 (x). An (h+1) th incremental encoding unit is configured to obtain, according to a quotient D h (x) and a remainder R h (x), a quotient D h+1 (x) and a remainder R h+1 (x) of x N h+1 -K m(x) relative to g h+1 (x).
摘要:
The present application discloses a data processing method and apparatus. The technical solutions of the present application include: coding received data; distributing the coded data to multiple PCS lanes; and performing self-synchronizing scramble separately for multiple data streams distributed to the multiple PCS lanes, where the multiple data streams are in a one-to-one correspondence with the multiple PCS lanes. The technical solutions provided by the present application may be used to reduce occupied logical resources during a data processing process at a physical layer.
摘要:
Embodiments of this application provide a balance-unbalance conversion apparatus, a communications device, and a communications system, and relate to the field of communications device technologies. The balance-unbalanced conversion apparatus includes an insulation substrate, a first microstrip, a second microstrip, and a conductive ground. The first microstrip includes a first balance signal connection section, a first impedance matching section, and an unbalance signal connecting section. The first balance signal connection section is configured to transmit a first component of a balance signal. The unbalance signal connecting section is configured to transmit an unbalance signal. The second microstrip includes a second balance signal connecting section, a second impedance matching section, and a ground section. The second balance signal connecting section is configured to transmit a second component of the balance signal. The ground section is configured to connect to a ground signal. The first microstrip, the second microstrip, and the conductive ground are all disposed on the insulation substrate, and a cross-sectional area of at least a part of the first microstrip and/or at least a part of the second microstrip is gradient.
摘要:
The present invention provides a method and an apparatus for determining a frame boundary of an FEC frame, and a decoding system, which are mainly applicable to an RS code and a BCH code. The method includes: receiving data, where the data includes N+P consecutive symbols with a first symbol being a starting point, N consecutive symbols with the first symbol being a starting point that are in the N+P consecutive symbols constitute a first data block, and N consecutive symbols with a second symbol being a starting point that are in the N+P consecutive symbols constitute a second data block; obtaining s parameter values corresponding to the first data block; determining a first iterative item and a second iterative item of the second data block; determining, according to the s parameter values corresponding to the first data block and the first iterative item and the second iterative item of the second data block, s parameter values corresponding to the second data block; and determining, according to the s parameter values corresponding to the second data block, whether the second symbol is a frame boundary of an FEC frame. The method for determining a frame boundary of an FEC frame disclosed in the present invention can improve efficiency of detecting a frame boundary of an FEC frame.
摘要:
The present invention provides a method and an apparatus for determining a frame boundary of an FEC frame, and a decoding system, which are mainly applicable to an RS code and a BCH code. The method includes: receiving data, where the data includes N+P consecutive symbols with a first symbol being a starting point, N consecutive symbols with the first symbol being a starting point that are in the N+P consecutive symbols constitute a first data block, and N consecutive symbols with a second symbol being a starting point that are in the N+P consecutive symbols constitute a second data block; obtaining s parameter values corresponding to the first data block; determining a first iterative item and a second iterative item of the second data block; determining, according to the s parameter values corresponding to the first data block and the first iterative item and the second iterative item of the second data block, s parameter values corresponding to the second data block; and determining, according to the s parameter values corresponding to the second data block, whether the second symbol is a frame boundary of an FEC frame. The method for determining a frame boundary of an FEC frame disclosed in the present invention can improve efficiency of detecting a frame boundary of an FEC frame.
摘要:
A method for switching data is provided, which includes the following steps. An output port scheduler obtains state information of Virtual Output Queues (VOQs) and available state information of input port data channels and output port buffers. The output port scheduler sends scheduling request information to a Fabric Interface Controller (FIC) of an input port whose input port data channel is ready in input ports corresponding to non-empty VOQs pointing to an output port. After receiving the scheduling request information sent by the output port schedulers, the FIC of the selected input port selects to respond to a scheduling request of one output port scheduler, and sends the VOQ pointing to the output port in the selected input port to the output port buffer. The output port scheduler schedules the VOQ received by the output port buffer out of a switch chip. A structure for switching data is further provided. In this way, buffer resources of the switch chip are saved and the switching performance of the system is improved.