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19 Threads found on edaboard.com: Qpsk Fpga
Hi All, We have a qpsk modulated signal 700 Mhz IF, 80Mhz BW to demodulate.The bit rate is 100 Mbit, roll-off is 0.65. Now we have to select an RF-ADC,fpga board to demodulate it. The RF part can be handled by an I&Q demodulator circuit. Our question is; what should be the minimum sampling rate of the ADC's? What should be their minimum clo
I want to design a PSK (BPSK/DPSL/qpsk/Oqpsk) modulated transmitter using fpga based board. Output can be 70MHz IF or directly S-band modualted RF signal. Input will be 10Mbps NRZ-L serial data. I've heard about IQ modulator which takes baseband analog input & generates RF output. Does anyone has block diagram of IQ modualtor scheme ?
what is the power consumption in fpga for 50MHz qpsk modulator? whether the power consumption will reduce if the qpsk modulator implemented in fully digital domain? tq -asraf-
hai name is asraf, im having problem to transmit my qpsk modulated data from fpga..the modulated data still in digital from my understanding,i have to convert the modulated qpsk data into analog by using DAC so that a pure analog waveform can be form..but after that i dont know what to do..please guide and help me..thanks in a
Hello, Can you suggest me how can we demodulate the Dqpsk signal in Simulink, using the Xilinx blockset. I am implementing in fpga, hence I need to use only the xilinx blockset. Any pointers for the tutorial would be helpful as well. Regards Kiran
I have a project that is about qpsk demodulation with fpga.But I am new on this subject.I want to learn which algorithm is used for demodulation and I need e book related to demodulation techniques. Thanks
Hi, I am designing a Transmitter using verilog,I want to synthesize the design to fpga and then get the modulated bits through the MGT(Multi Gigabit Transmitter),my problem is since modulation formats like qpsk have negative constellation points they take more bits than positive constellation points.Any idea how to get around this. Thanks, Mah
Hi, I am designing a Transmitter using verilog,I want to synthesize the design to fpga and then get the modulated bits through the MGT(Multi Gigabit Transmitter),my problem is since modulation formats like qpsk have negative constellation points they take more bits than positive constellation points.Any idea how to get around this. Thanks,
I want to Know how to implement The qpsk as software defined radio on fpga tahnks
Hi Friends!, I'm doing a qpsk communication project.And Using Virtex-4,Xilinx ISE8.2i. My ADCs and DACs require 100 MHZ as clk input in order to work. In our circuit,we have not provided a separate crystal or oscillator for adc\dac in PCB. So While programming, I use to assign the clk pins of dac\adc to one of the fpga input pin. And in coding,I w
I have to design a qpsk receiver and implement it on fpga, I was trying to get good material for receiver but i can't . Can someone please help me by providing some material related to qpsk receiver and also related to different synchronization issues in receiver. Look at these simulink models: www.edaboar
Dear friends, I am implementing a digital qpsk demodulator (Data rate is: 42.4515 MBps) with VHDL for realizing on fpga. For this, I have developed the sub modules such as: (1- ) 16 bit Edge sensitive Phase-Frequency Detector (PFD) with up/down counter (2- ) 32 bit Numerically Controlled Oscillator (NCO) with 9 bit outputs for Sin/Cos gene
I should build a fm modem using fsk only using A/D , D/A and fpga Please let me know your hints, resources and any other related data. Thanks
hi... fellowzz...i have made up my mind in doing my final year project on fpga...i want to make a filter or a modem....i need help in the sense that i am not able to figure out which modulation should i go for....Bpsk,qpsk or anything else...i am a doing telecom engg so i would prefer some modulation related to the telecommunication field..
hello every: i am beginner of digital filter design. i am designing qpsk modulator/demodulator, i am like to know which construction is better for shaping filter,cic filter and HB filter by fpga . best regard! Mr.Z
Hi,i want to use fpga to demodulate qpsk signal. IF =140MHz BW=3.5MHz i want to use 70MHz Clock sample the IF signal,dose it work?
DSP are specialized to do mathematical or physical operations, like FFT, analog signal processing like FSK, qpsk, ... They contain multipliers and specialized hardware. fpga are more general. Newer fpga start having hardware multiplier, so some basic DSP functions can be implemented. fpga are mostly used for digital (...)
for qpsk, you can see intersil's datasheet:
How to program a VHDL to implement demodulation of AM, FM, PM, PSK, qpsk, PCM, FSK, ASK, CDMA.. on fpga (Xilinx) could anybody give me some advice, CORDIC or some other algorithms are appreciate, thx in advance.