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# Pseudo Noise Sequence

8 Threads found on edaboard.com: Pseudo Noise Sequence

## Blind Algorithm for Estimating Pseudo-noise Sequence codes

Hi everyone , Does anyone can help me on my project? i need matlab simulations of ? A Blind Algorithm for Estimating pseudo-noise sequence of DSSS Signal in Lower SNR Conditions ? . If anyone have it sent me : rezadigit@yahoo.com. It as i need to submit my results very soon and these codes would help me finish my report in time Be

## frequency characteristic of pseudo-random sequence

Is it the same as the white noise which means the power is equally divided in the whole frequency range? If so, how does it come? Any reference is preferred. Now I've built a pseudo-random sequence using linear feedback shift register(LFSR), and I'd like to check its power spectral, is it possible to make it out using Cadence and how? (...)

## What is a Pseudo-random Noise (PN) sequence?

A pseudo-random noise (PN) sequence is a sequence of binary numbers, e.g. ?1, which appears to be random; but is in fact perfectly deterministic. The sequence appears to be random in the sense that the binary values and groups or runs of the same binary value occur in the sequence in the (...)

## noise generation circuit

I've seen zener diodes and reverse polarised BE junctions folowed by amplifiers used as noise sources in some simple test equipment (home made). For better performance use a pseudo-random binary sequence (PRBS) generator connected to a DAC. Look in The art of electronics - Horowitz, a chapter is about PRBS generators using feedback shif

## How are codes on a mobile phone top-up cards generated?

Hi, Yes the number sequences are generated by an algorithm of sorts. Hoever the sequence is usually generated by a pseudo noise sequence (thus random) and then filtered to assure correctness. To ensure that the codes are not faked a database of valid codes are kept. Once the pin code is recieved by the (...)

## Verilog code for 12-bit random sequence generator

4-1. Random-Bit noise Generator??.??????????.?. 32 4-1-1. Uniform-Distributed Random-Bit Generator??.?.. 33 4-1-2. Normal-Distributed Random-Bit Generator????. 34 4-1-3. pseudo-Random Random-Bit Generator?????? 35 Regards, IanP

## How can you generate random sequence in digital circuits?

I guess you CAN'T! All that you can do with logic gives you more or less pseudo-RANDOM sequences. True random sequence can be generated using the help of noise generator. There is an application note on the web (can't recall the magazine nor the name of the article right now, sorry) that uses Zener diode as broadband (...)

## Help me implement white gaussian noise generator in VHDL

in addition to the stuff from bartart: xapp052 (especially this one), xapp217, xapp220 from Xilinx documentation. These are LFSR (Linear Feedback Shift Register) designs that produce pseudo (careful!)-random sequences. This means that eventually they get repeated. But if you have e.g. a 32-bit LFSR producing a maximal length sequence, (...)