50results about How to "Orthogonal" patented technology

The invention relates to a wireless communication technology and discloses a method for generating information of a relay link physical uplink control channel, which comprises the following steps: determining an orthogonal sequence corresponding to a sequence index according to the sequence index; and generating the information carried by the relay link physical uplink control channel (R-PUCCH) according to the determined orthogonal sequence. The invention further discloses a communication device, which comprises a determining unit and a generating unit, wherein the determining unit is used for determining the orthogonal sequence corresponding to the sequence index according to the sequence index; and the generating unit is used for generating the information carried by the R-PUCCH according to the orthogonal sequence determined by the determining unit. According to the scheme of the invention, the corresponding orthogonal sequence is determined according to the sequence index, and the information carried by the R-PUCCH is generated according to the orthogonal sequence, thereby enabling the information to have orthogonality and improving the performances of a relay system.

The emission diversity based on space-time code has space, time and code gains. Wherein, the space-time block code is simple; but, the code efficiency when emission antenna number is larger than 2 opposite to complex signal, and the scheme just fits to quasi-static fading channel. In CDMA system, the scheme uses cycle space-time block decoding method and orthogonal spread-spectrum code to different antennas, simplifies decode same as traditional code, and can improve anti-channel attenuation and system transmission performance.

The invention discloses a digital nuclear magnetic resonance lock signal transmitter receiver set which consists of a lock transmitter, a lock receiver and a lock error output unit. The transmitter receiver set is characterized in that: an FPGA control circuit is connected with a clock distribution circuit and a backboard interface, a digital frequency synthesizer is respectively connected with the clock distribution circuit, a low pass filter and the FPGA control circuit; a digital variable gain amplification circuit is connected with the low pass filter and the FPGA control circuit respectively; the low pass filter is connected with the digital variable gain amplification circuit and a probe respectively; the low pass filter is connected with the probe and a switch respectively; the variable gain amplification circuit is connected with the FPGA control circuit; a frequency mixer is connected with the low pass filter and the variable gain amplification circuit respectively, an IF digital sub-system is connected with the clock distribution circuit, the FPGA control circuit and the low pass filter respectively; and a digital-to-analog converter (DAC) is connected with the FPGA control circuit and a conditioning circuit. The digital nuclear magnetic resonance lock signal transmitter receiver set has the advantages of digital control, good versatility and low cost, and enhance magnetic field stability and anti-interference capability.