Questions tagged [data-rate]
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31 questions
1 vote
0 answers
60 views
PCIe 4 and 5 GT/s characteristic, its connection to frequency [duplicate]
While designing a board that uses PCIe gen5 interface, I was wondering how exactly gen5 standart achieves double data speed comparing to gen4 (32GT/s PCIe5 and 16GT/s PCIe4)? Both 4 and 5 are 16ghz ...
0 votes
0 answers
434 views
Interfacing high-speed ADC with ZYNQ 7020
I need to interface a high-speed ADC (100 Msps or higher data rate) with a ZYNQ 7020 core board, which has limited number of pins available to use (100 pins). I need to sample a 30 MHz signal with my ...
- 375
2 votes
2 answers
378 views
How to compute the energy efficiency in bits/s/watt
The energy efficiency (EE) in wireless communications is usually calculated as the ratio of data rate to power consumption: how many data (in bits per second) are delivered per consumed power (in ...
- 125
-1 votes
1 answer
196 views
Data rate for an ASK modulation [closed]
A telephone line with a bandwidth of 3 kHz and an SNR of 6 dB. I am asked to calculate the maximum bitrate on this line and the error probability, knowing that ASK modulation is used. For ASK ...
1 vote
1 answer
173 views
Why does PCIe still hold on to 'transfers/second' instead of bits/second or symbols/second?
I think it is kinda all covered in the title. To my (incomplete) knowledge, PCIe is the only modern bus that still expresses its rate in transfers per second. Is there, apart from 'tradition' any ...
- 12.8k
0 votes
0 answers
113 views
Selecting the suitable ADC data rate and LPF for a DC measurement
I want read the voltage from an electrochemical battery and send it to my PLC in order to do some automation (average value is around 1.2V, and I need an accuracy better than 100 microvolt). I am ...
- 405
1 vote
1 answer
112 views
How to compute data rate I can reach with my design?
I implemented a modulator for a transmitter, which sends baseband modulated signal. The transmitter has the following parameters: datarate : 520 Ksps (min), 64,44 Msps (max) Bandwidth: BW = 56 MHz (...
- 31
2 votes
0 answers
216 views
AD9361: how to compute datarate and configure filters
I will use AD9361 as a transmitter of a modulated baseband signal. The modulated baseband signal is implemented in FPGA/SDK. AD9361 has real-time bandwidth of 56MHz but we have maximum 61.44 MSPS data ...
- 31
3 votes
1 answer
699 views
ADXL345 Accelerometer data rate vs bandwidth
I recently started working with the ADXL345 Accelerometer and got a bit confused on what's the difference between the data rate and bandwidth. From the ADXL345 datasheet p14, we can see the different ...
- 43
2 votes
2 answers
1k views
Maximum Ethernet bandwidth through a slip ring
I'm trying to understand what would prevent a 1 GbE non-optical slip-ring from transmitting 10GbE, 40GbE or even 100/200/400GbE. They all have 'metallic'/copper variants (backplane or short cable) and ...
2 votes
2 answers
239 views
Maximum rate between ADC-FPGA link for Igloo 2 vs Max 10
An ADC has a source synchronous output interface and is to be interfaced with an FPGA. The ADC can communicate using single ended CMOS, DDR CMOS and DDR LVDS. How do I know what is the fastest rate ...
- 2,347
0 votes
2 answers
78 views
How can Google Fiber make a difference since most of the mediating wires out there are copper? [closed]
Optic fiber sends more data more quickly. But if you look at the Google Fiber map you will see that only the local connections are optic. The rest of the world is almost entirely copper, right? So won’...
0 votes
1 answer
153 views
Expected SDRAM access speeds?
I would like to get an idea of how fast SDRAM accesses should be. If I have a 32-bit ARM based processor running at 500MHz accessing an SDR sdram device clocked at 166MHz, what sort of read/write ...
1 vote
0 answers
756 views
What are the differential voltage technology used for PCIe gen 4, gen 5 and gen 6?
I have been studying various IO standards used for various PCIe generations? I understand that PCIe Gen-3 uses LVDS, LVPECL and PCML. I would like to learn what are the standards used for other ...
- 339
0 votes
0 answers
203 views
How can I simulate microwave radio link transmission?
My task is to simulate a two-way data transmission microwave link. The fixed parameters are distance, transmitter power, carrier frequencies, bandwidth, receiver noise figure, intermediate frequency, ...