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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

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
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
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
how can I make nanorobot?
Lily
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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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