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Thanks alot Dave and tony, actually there is no project, I heard it back in my school that in Mobile communication system when you are near to the BTS, so power is high and then i confused with high power and low mod or high power with high mod. now i am clear that high power with high mod will...
Hallo Communication Experts,
am I correct to consider,
1. Low power with lower modulation type e.g 1db with bpsk and high power with higher order or
2. Low power with higher order e.g 1db with 64QAM and high power with low mod type.
I am confusing these two cases. which one is correct??? and...
In our lab we are using USRP2 devices as a Transceiver at both ends.
These devices are equipped with a Dual Band 2.4 to 2.48 GHz and 4.9 to 5.9 GHz omni-directional vertical antenna, at 3dBi Gain.
Regarding your last point of loss b/w antenna and antenna connector, any suggestion how I can get...
Finding Pathloss from Given Tx-power and RSSI values???
Hallo experts,
F = 5.03Ghz
D = 1 meter
Tx = 30 dB
RSSI = -50 dB
These values are taken from real transmitter and receiver in the Lab.
Question: Placed 1 m apart from each other and communicating @ 5.03Ghz, If a transmitter power is set...
Dear all,
I am writing a report about implementation of some Algorithms using USRP devices. I am a bit confused of how to write a general introduction about this field.
I have separate materials about Cognitive radio and Software defined RAdios. But for step wise forward moment, Shall I start...
Design Audio Encoder - Decoder in Simulink
Dear all,
I would like to transmit an Audio file over the Air and Receive at other end... for this Purpose, I just took
1. a simple audio file from computer => Up-sampled to 8 KHz and then=> Re-sampled to the device frequency (USRP i.e 200 Khz) => FM...
Dear all,
I would like to start a semester project related to Matlab Simulink and USRP devices. I am new in this field and studying regularly about it...
The first step to setup devices is completed and now I would like to check if both device can communicate properly. For this Reason can any...
Hallo Every one,
I will be doing a student project on SDR/USRP hardware tools, for that Today I got a Matlab setup DVD from my univ department, Installed it and searched for SDR hardware block in Communication System Toolbox. but did not found it. Does any one else experienced the same problem...
Dear member,
From Communication point of view I would like to know
1. what is taped delay line model
2. for what purpose is it being used
3. Is it implementable in MATLAB, if yes may be some references.
4. what is its relation with Time variant and Time Invariant System?
I shall be very...
thanks fani for your response. I wont go into such complex explaination of this. actually i have to extract some information from such setup that we used in out university lab. i can provide the recored data ploted as inphase and quadrature values...
its a gif file combination of 100 data...
hi friends, a new issue to be discussed.
I was reading about ultra wide band radar sensors. and found a nice block diagram as follow.
the simplest thing i know is that an antenna is connected to transmitter side, transmits signals and a receiving antenna receive the signal... what is the need...
that clicked me. I looked back into the laminate data sheet and found at f=18 GHz, the insertion losses of RO4003 are -0.3db /inch. since my design is around 20 Ghz I can assume that to be the reason of power losses.
I tried to simulate one but was not successful, at such high frequency we use...
hi every one,
I have designed a power divider for 20 Ghz, simulated results were S12=S13=-3dB, but the tested measured result deviates heavily from simulated results. out put powers are S12= -4 db and S13 = -4.9 db.
the substrate i have used was roger Er=3.35 and SMA connectors are used.
for...
https://www.hittite.com/content/documents/data_sheet/hmc144lc4.pdf
conversion loss of this mixer as per it's data sheet are 10-13 dB, can we relate the extra losses to transmission line losses or pcb housing effect. also i was thinking that I have used SMA connectors whose cut-off frequency is...
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