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Grading

This is a two-week lab. Your prelab is due a week after the quiz for Lab 4, and the quizzing occurs two weeks after thequiz for Lab 4.

Grading for this lab will be a bit different from past labs:

  • 1 point: Prelab
  • 2 points: Working code, implemented from scratch in assembly language or C.
  • 5 points: Optimization. These points will be assigned based on your cycle counts and the optimizations you have made.
  • 2 points: Oral quiz.

Appendix a:

fsk.c

SINE.asm

C_ASM.bat

1 /* ECE320, Lab 5, Reference Implementation (Non-Optimized) */ 2 /* Michael Frutiger 2/24/04 */ 3 4 #include "v:/ece320/54x/dspclib/core.h" /* Declarations for core file */ 5 6 main() 7 { 8 int *Rcvptr,*Xmitptr; /* pointers to Xmit & Rcv Bufs */ 9 int r1,r2; // temp random bit storage 10 int symbol; // 0 for [00], 1 for [01], 2 for [10], 3 for [11] 11 int n; // dummy variable 12 13 int freqs[4] = {9, 13, 21, 17}; // 32*freqs 14 int phase[32]; 15 int output[64]; // temp output storage 16 17 18 // Initial PN generator register contents 19 int seed = 1; 20 21 // Initial phase 22 int prev_phase = 0; 23 24 25 while( 1 ) 26 { 27 /* Wait for a new block of samples */ 28 WaitAudio(&Rcvptr,&Xmitptr); 29 30 // Get next two random bits 31 r1 = randbit( &seed ); 32 r2 = randbit( &seed ); 33 // Convert 2 bit binary number to decimal 34 symbol = series2parallel(r1,r2); 35 36 for (n=0; n<32; n++) 37 { 38 phase[n] = ( freqs[symbol]*n + prev_phase ) % 64; // get into 0 to 64 range 39 if (phase[n] > 32) phase[n]=phase[n]-64; // get into -32 to 32 range 40 phase[n] = phase[n] * 1024; // 1024=2^15*1/32 41 // [-2^15 2^15] range for use with 42 // SINE.asm 43 } 44 sine(&phase[0], &output[0], 32); // compute SINE, put result in output[0 - 31] 45 prev_phase = ( freqs[symbol]*32 + prev_phase ) % 64; // save current phase offset 46 47 // Get next two random bits 48 r1 = randbit( &seed ); 49 r2 = randbit( &seed ); 50 // Convert 2 bit binary number to decimal 51 symbol = series2parallel(r1,r2); 52 53 for (n=0; n<32; n++) 54 { 55 phase[n] = ( freqs[symbol]*n + prev_phase ) % 64; 56 if (phase[n] > 32) phase[n]=phase[n]-64; 57 phase[n] = phase[n] * 1024; 58 } 59 sine(&phase[0], &output[32], 32); 60 prev_phase = ( freqs[symbol]*32 + prev_phase ) % 64; 61 62 63 // Transfer the two symbols to transmit buffer 64 for (n=0; n<64; n++) 65 { 66 Xmitptr[6*n] = output[n]; 67 } 68 69 } 70 } 71 72 73 // Converts 2 bit binary number (r2r1) to decimal 74 int series2parallel(int r2, int r1) 75 { 76 if ((r2==0)&&(r1==0)) return 0; 77 else if ((r2==0)&&(r1==1)) return 1; 78 else if ((r2==1)&&(r1==0)) return 2; 79 else return 3; 80 } 81 82 //Returns as an integer a random bit, based on the 15 low-significance bits in iseed (which is 83 //modified for the next call). 84 int randbit(unsigned int *iseed) 85 { 86 unsigned int newbit; // The accumulated XORs. 87 newbit = (*iseed >> 14) & 1 ^ (*iseed >> 13) & 1; // XOR bit 15 and bit 14 88 // Leftshift the seed and put the result of the XORs in its bit 1. 89 *iseed=(*iseed << 1) | newbit; 90 return (int) newbit; 91 }

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
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Source:  OpenStax, Ece 320 spring 2004. OpenStax CNX. Aug 24, 2004 Download for free at http://cnx.org/content/col10225/1.12
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