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codes (6)
Fang Bo, sine wave, triangle wave, triangle wave,
no vote
Application background Fang Bo, sine wave, square wave, triangle wave, frequency sweep signal generator FPGA, in which the signal frequency by changing the NCO frequency control word, which can change the square wave duty cycle, several modules are verified by hardware, NCO control word 32, high accuracy
chenpuyue1011831
2016-08-23
3
1
Transplantation of uc-gui system based on qsys
no vote
Application background Large size TFT LCD driver in ALTERA FPGA, with SRAM memory, qsys system, based on the transplant uc-gui, can run through the official uc-gui example
chenpuyue1011831
2016-08-23
3
1
(7,4) Verilog codec Hamming code
no vote
Application background Hamming code is a linear block code. Linear block code is a sequence segment, which divides the information sequence into a sequence of length k, which is a linear relationship between the r bits. Such an anti - jamming code is called a linear block code. From the encoding form, we can find that the Hamming code is a very strict check encoding. In this example, 3 bits of the 4 bits of the 3 data bits are used to detect the parity and correction of the code bit (but only one bit error can be detected and the two error can not be detected). In the calibration of each Hamming code and the corresponding data values, even if the result is (error correction code 0) is correct, if is odd (error correction code 1) is the Hamming code corresponding to the three data bits in error, and then through the other two Hamming code respectively the operation to determine the specific position which is out of the question.
chenpuyue1011831
2016-08-23
0
1
OFDM implementation of FPGA algorithm
4.3
Application background Cyclone 4 on OFDM algorithm, the carrier number 64, the source bit PN9 1.024Mbit/s pseudo random sequence, the first 4bit a group through the symbol mapping module map 16QAM symbol, a set of 64 symbols for IFFT operations, the results of serial output, through the digital output to the DA output
chenpuyue1011831
2016-08-23
15
1
FPGA implementation of QPSK modulation and demodul
4.5
The algorithm for QPSK modulation and demodulation carrier using Costas-loop synchronization algorithm, algorithm for bit timing by Gardner
chenpuyue1011831
2016-08-23
14
1
Viterbi Convolutional coding and decoding algorith
4.0
Convolutional coding uses 2,1,2 non-systematic Convolutional codes, decoding algorithm using the Viterbi algorithm, absolute engineering validation systems; supports up to 50Mbit/s more throughput
chenpuyue1011831
2016-08-23
7
1
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