# Register now to access 7 million high quality study materials (What's Course Hero?) Course Hero is the premier provider of high quality online educational resources. With millions of study documents, online tutors, digital flashcards and free courseware, Course Hero is helping students learn more efficiently and effectively. Whether you're interested in exploring new subjects or mastering key topics for your next exam, Course Hero has the tools you need to achieve your goals.

3 Pages

### hw10

Course: ME 365, Spring 2012
School: Purdue
Rating:

Word Count: 622

#### Document Preview

365 Homework ME 10, Spring 2012 Problem 1 sin(C1t) sin(C1t) x1(t) Filter x1(t) Demodulation Modulation y(t) x2(t) Filter Modulation sin(C2t) x2(t) Demodulation (Receiver) sin(C2t) (Transmitter) You are interested in transmitting x1 (t ) = 10 cos 2 10t and x2 (t ) = 20 cos 2 30t using the carrier signals V1 (t ) = 2 sin 2 500t and V2 (t ) = 2 sin 2 530t respectively via amplitude modulation. a) What...

Register Now

#### Unformatted Document Excerpt

Coursehero >> Indiana >> Purdue >> ME 365

Course Hero has millions of student submitted documents similar to the one
below including study guides, practice problems, reference materials, practice exams, textbook help and tutor support.

Course Hero has millions of student submitted documents similar to the one below including study guides, practice problems, reference materials, practice exams, textbook help and tutor support.
365 Homework ME 10, Spring 2012 Problem 1 sin(C1t) sin(C1t) x1(t) Filter x1(t) Demodulation Modulation y(t) x2(t) Filter Modulation sin(C2t) x2(t) Demodulation (Receiver) sin(C2t) (Transmitter) You are interested in transmitting x1 (t ) = 10 cos 2 10t and x2 (t ) = 20 cos 2 30t using the carrier signals V1 (t ) = 2 sin 2 500t and V2 (t ) = 2 sin 2 530t respectively via amplitude modulation. a) What is the sum of the two modulated signals: y (t ) ? This is the signal that will be transmitted. b) Sketch the amplitude spectrum of the signal in part a. c) What is the problem? How can it be avoided? d) Repeat parts a and b with V2 = 2 sin 2 3030t . Is the problem fixed for now? Before demodulation, the two modulated signals must be separated by passing y (t ) through two separate filters. e) Using two ideal band-pass filters with unity gain calculate and sketch the amplitude spectra of the two signals just before they go through demodulation. Call these signals y1 (t ) and y2 (t ) . f) Repeat part e with a low pass and a high pass filter. Both filters are first order with unity gain with 600 Hz and 2600 Hz corner (i.e. cut-off) frequencies. Now you need to perform the demodulation by multiplication by carrier signal method (Recall that after the multiplication, you need to use low-pass filtering. This is a part of the demodulation process and is separate from the filters you have already used just before demodulation) ' ' g) Using your result from part e, obtain x1 (t ) and x2 (t ) . Assume that your low pass filter is ideal. h) Perform the same with your answer from part f. 1 Problem 2 Below are the power spectral density of a white noise signal (on the left), and the frequency response magnitude of the system G ( j ) it is passed through (on the right). 30 2/Hz 1 frequency (mV) [Hz] 100 300 400 frequency [Hz] a) Sketch the power spectral density of the noise after is goes through system G. b) Calculate the power of this modified noise nm (t ) . This modified noise is then added to a measurement s (t ) where s (t ) = 5.0 + 0.2sin(1t ) + 0.5sin(2t ) Volts c) Calculate the power of s (t ) . d) Calculate the signal-to-noise ratio of s (t ) + nm (t ) 2 Problem 3. Consider the following system: 1st order filter s (t ) + n1 (t ) + n2 (t ) s f (t ) + n f 1 (t ) + n f 2 (t ) Where: s (t ) : desired signal, n1 (t ) : noise component 1, n2 (t ) : noise component 2 x f (t ) : desired signal after filter, n f 1 (t ) : noise component 1 after filter n f 2 (t ) : noise component 2 after filter Let: s (t ) = 5 + 2sin(2 10t ) + 1sin(2 20t + / 6) n1 (t ) = 0.1sin(2 120t + / 3) , n2 (t ) : Johnson Noise, with T=600K, device resistance of 1Mohm a) What is the power of the uncorrupted, unfiltered signal, s 2 (t ) ? b) What is the power of the 1st unfiltered noise component, n12 (t ) ? 2 c) What is the power of the 2nd unfiltered noise component, n2 (t ) ? d) What is the signal-to-noise ratio of the unfiltered signal? s (t ) + n1 (t ) + n2 (t ) ? Now design a unity-gain low pass 1st-order filter which gives you as much SNR as possible for s f (t ) + n f 1 (t ) + n f 2 (t ) while making sure that the desired signals power doesnt drop by more than 2%. e) Write down the 1st-order filter designed to meet the above criteria. s 2 (t ) Show your calculation that verifies that f is greater than 0.98. s 2 (t ) f) Calculate the new signal-to-noise ratio of s f (t ) + n f 1 (t ) + n f 2 (t ) . g) Describe what your filter is doing to reject noise. Can you remove all of the unwanted noise with a 1st order filter? Why or why not? 3
Find millions of documents on Course Hero - Study Guides, Lecture Notes, Reference Materials, Practice Exams and more. Course Hero has millions of course specific materials providing students with the best way to expand their education.

Below is a small sample set of documents:

Purdue - ME - 365
e)f)g)h)
Purdue - ME - 365
ME365 HW11ME365 HW11ME365 HW11ME365 HW11ME365 HW11
Purdue - ME - 365
ME365 FALL 2008 LAB 6: SYSTEM IDENTIFICATION OF A SECOND ORDER SYSTEM Overview Of ID Techniques10/06/2008 Four techniques are used to identify the system parameters n and for the 2nd order system studied in this experiment. These techniques fall into two
Purdue - ME - 365
ME365LAB 7: SIGNAL CONDITIONING AND LOADING In-Lab 7 deliverables:A. When answering In-lab 7 questions, please present your answers in the form specified in this document wherever applicable. B. For questions not covered here, present your answers in a
ASU - HIST - 109
16:18 Prepare Collect the materials Consider the purpose of the essay Argument = Thesis Thesis Your paper in a nutshell; the argument Outline Write Review Second draft Structure of a Strong Essay: Thesis Point/ Proposition #1 Evidence Point/ Proposition #
ASU - HIST - 109
16:18PrepareCollectthematerialsConsiderthepurposeoftheessayArgument=ThesisThesisYourpaperinanutshell;theargumentOutlineWriteReviewSeconddraftStructureofaStrongEssay:ThesisPoint/Proposition#1EvidencePoint/Proposition#2EvidencePoint/Proposit
ASU - HIST - 109
16:18PrepareCollectthematerialsConsiderthepurposeoftheessayArgument=ThesisThesisYourpaperinanutshell;theargumentOutlineWriteReviewSeconddraftStructureofaStrongEssay:ThesisPoint/Proposition#1EvidencePoint/Proposition#2EvidencePoint/Proposit
ASU - HIST - 109
3 April 2012Rising Sectionalism and the Causes of the Civil WarWestward ExpansionManifest Destiny Painting: American Progress, John Gast, 1872 Manifest Destiny God-given right Jeffersonian ideals/ small agrarian ideals still current todayo Romantic
ASU - HIST - 109
4 different dramas in the stories:Inter-slave relationsCrewCaptainCivil Society thats reading about the Slave shipsTheme of violence is very important to the relationships. 2 groups enact violence; 2groups receive the violence. Who is enacting the v
ASU - HISTORY - 110
How did the US become involved in WWII Isolation to involvement to committed involvement US- Economic, social, ideological Europe- 3 Ds Asia- Economics and self- determinationIsolation and appeasement British and French Policy of Appeasemento Nevil
ASU - HISTORY - 110
Weimar Republic (191933) The republic of Germany formed after theend of World War I. On 9 November 1918 a republic was proclaimed inBerlin under the moderate socialist Friedrich Ebert. An elected NationalAssembly met in January 1919 in the city of Weim
ASU - HISTORY - 110
Stonewall Uprising Introduction of the Situation: Stonewall was a popular gay bar. In 1969 there was a police raid, everyone there was told they were under arrest. But many bean saying how they were not going to give in. Gay people stood up and said no. 1
ASU - HISTORY - 110
Merari Amarillas HST 110 April 3, 2012 Bridge to Freedom Race Riots began to pick up, violence began to increaseStudent nonviolent (SNCC) tried to create a protest to vote but were met with some resistance. The end of 1964 tired some of them tired of not
ASU - HISTORY - 110
Freedom Riders 1961 Kennedy was elected president and brought up the feeling of a new generation promoting equality and freedom yet he had to be careful because the he had gotten a large vote from the white population in the South. The Kennedy's were more
ASU - HIST - 110
History 110Chap. 15AnnouncementsBooksExtrafor classCredit OpportunitiesGone with the WindBirth of a NationFind out your familys civil warhistoryMarjorieBlake1909ReconstructionWhatwasreconstruction?Whoarethegroupsofpeopleinvolved?NeedtoKnow:
ASU - HIST - 110
Week 3 HST 110 Tuesday, January 17thHousekeepingBluebooks History Today Paper 1 Manliness and Civilization Date switch.due Feb. 7thWithout Sanctuary http:/withoutsanctuary.org/main.html Issues of Race, Power, Masculinity and FemininityManifest Destiny
ASU - HIST - 110
Tuesday, January 24th HST 110Housekeeping Quiz History Today Papers Reading Manliness and Civilization Extra Credit Today Finish Ch. 16 and start 17 Thursday Spanish American War and Philippine War Terms to Know: Chapter 15 Reconstruction The diffe
ASU - HIST - 110
HST 110 Thursday February 2nd Commercials and HST 110Commercial Masculinity and Manlinesshttp:/www.youtube.com/watch?v=4_cGuIOaP4Commercial Industrialization, Class, Imagehttp:/www.youtube.com/watch?v=SKL254Y_jtc ProgressivismOptimistic Predestin
ASU - HIST - 110
HIST110The Atomic Caf The trinity bomb sent two different shock waves unexpected damage President Truman Dropped two bombs on Japan over a period of 3 days? Nagasaki and Hiroshima Used as an experiment to test the damage it would cause 17:33Japan then
ASU - HIST - 110
Professor Mead Email: Chelsea.Mead@asu.edu Office: Coor 4509 HST 110, Sch Line 23797 T/TH 10:30 11:45 PM, ART 220 Office Hours: T/TH 9:30-10:15, 2-2:45 and by appointment &quot;United States Since 1865&quot; Course Description: History is the study of large events,
ASU - HIST - 110
The Feminine MystiqueBetty FriedanOnline Information For the online version of BookRags' The Feminine Mystique Premium Study Guide, including complete copyright information, please visit: http:/www.bookrags.com/studyguide-femininemystique/ Copyright Inf
ASU - COM - 230
Chapter 9- Leadership&quot;Human (symbolic) communication which modifies the attitudes and behaviors of others in order to meet shared group goals and needs&quot; Any person who exercises interpersonal influence to a group attain its goals. Types of leaders Design
ASU - COM - 230
Johnson's Reconstruction &quot;Carrying Out Lincoln's Plan&quot; April 15, 1865 - March 4, 1869 President Abraham Lincoln and the Radicals in the Republican Party had clashed bitterly about reconstruction policies long before the assassination thrust Vice President
ASU - COM - 230
The Hugh Downs School of Human Communication COM 230 - Small Group Communication Fall 2011 Section #: 70471 Room: Stauffer 232 Time: Tuesday and Thursday, 7:30 am 8:45 am Instructor: Patrick McDonald E-mail: pgmcdona@asu.edu appointment Required Text: Ada
ASU - COM - 230
Chapter 10- Small Group PresentationsPlanning Know your audience o Does your audience: Have familiarity with the topic? Hold attitudes against your topic? Have you been in attendance?Know your space Know your purpose o Informative, persuasive, entertain
ASU - COM - 230
Chapter 8- Managing Conflicts ProductivelyConflict - an expressed struggle between at least two interdependent parties who perceive in compatible goals, scarce resources, and interference from the party in achieving their goals. Conflict can be experienc
ASU - COM - 230
Chapter 7-Group Problem Solving ProceduresComponents of Problem Problem- the difference between what you wasn't to expect and what actually is the case -3 Components 1.) Any undesirable existing solution 2.) Desired situation or goal 3.) Obstacles to cha
ASU - COM - 230
Chapter 5- Working with Diversity in Small Groups (Cont.)Cultural Diversity Individualism vs. Collectivism Individualism o Emphasis on individual o Personal responsibility o Ex. &quot;you are special&quot;, &quot;I gotta be me&quot; Collectivism o Emphasis on loyalty to fam
ASU - COM - 230
Chapter 2- Groups as Structured Open SystemsSystem- a set of elements that functions as a whole because of interdependent relationships System Concepts Inputs o All the elements present at the outset or the initial raw materials Throughputs o Influences
Saint Joseph's University - FINANCE - 612
Derivatives MarketsFin 621Gregory M. McDermott, M. App. FinProfessional ExperienceRegional Sales ManagerChief FX StrategistOptions UniversityNational Sales ManagerPNC Home Equity PartnersPNC Home Equity PartnersHead Options TraderJAS Securities
Saint Joseph's University - FINANCE - 612
G regoryM.McDermottRights or Obligations?Long option positions?Short option positions?Rights or Obligations?Long option positions?RightsShort option positions?ObligationsFill in the blanksCallPutLongShortFill in the blanksCallPutLongShor
Saint Joseph's University - FINANCE - 612
Derivatives MarketsClass # 3Collars A collar represents a bet that the price of theunderlying asset will decrease and resemblesa short forward A zero-cost collarcan be created whenthe premiums of thecall and put exactlyoffset one another3-2Spe
Keller Graduate School of Management - HR595 - 101
You Decide WorksheetName _Course Section _Date _Scenario Summary:A supervisor in a large accounting firm is scheduled to interview a job candidate who comeshighly recommended and has excellent qualifications. Jim has an accounting degree (bachelors)
Western Kentucky University - FINANCE - 436
WENDY M. JEFFUSINTERNATIONAL FINANCIAL ENVIRONMENTEXCHANGE RATE DETERMINATIONExchange rates are prices that are determined by supply and demand. For some countriesthe exchange rate is the single most important price in the economy because it determine
Western Kentucky University - MGT498 - MGT498
Quynh Nhu TruongDr. DroegeMGT498- Strategy&amp;PolicyMarch 20, 2012I.Medical Tourism in the PhilippinesThe primary issues in the emerging markets case:Philippine is a country that located on the western edge of the Pacific Rim. Thecountry is consists
University of Florida - BSCI - 330
Annie ParkBSCI 330: Section 0115Malini MukherjeeNovember 9, 2011Drug Stimulated Cardiologic Responses by Ligand Binding inDaphnia MagnaA. ParkAbstractThe connection between ligand binding to eliciting physiological responses is afundamental mecha
University of Florida - BSCI - 330
Annie ParkBSCI 330Natural Killer Cells in ObesityThe researchers are investigating the question of whether or not obese individuals shouldexpect a decrease in life expectancy, and if smoking increases their chances of a shorter lifeexpectancy (OShea
Bloomsburg - LEGAL STUD - 400
18 August 2011Comp-Lit 141FinalHedonism, by definition is seen as the, Pursuit of, or devotion to pleasure, especially to thepleasures of the senses. However, this pursuit can lead to happiness or destruction. In Aristophanesplay, Lysistrata, undoubt
Bloomsburg - LEGAL STUD - 400
2 May 2011Eng144Final PaperSociopolitical and Gender Power Struggles in Al-Hakims Fate of a CockroachFate of a Cockroach portrays humans as arrogant and self-centered in regard to social and politicalarenas that disregard the existentialism of the wo
Bloomsburg - LEGAL STUD - 400
North Korean Human Rights ViolationsHuman Rights and WrongsProfessor McCarthyFebruary 23rd, 2012Ryan Michael LawsonNorth Korea has become infamous for its many atrocities to humanity. This country iswell known for its fear-inducing communist politic
Bloomsburg - LEGAL STUD - 400
North Korean Human Rights ViolationsHuman Rights and WrongsProfessor McCarthyFebruary 23rd, 2012Ryan Michael LawsonNorth Korea has become infamous for its many atrocities to humanity. This country iswell known for its fear-inducing communist politic
Bloomsburg - LEGAL STUD - 400
After viewing the film, Chicago 10, I feel that inciting a riot and the right to assembleare both legal fictions.Under federal law, a riot is a public disturbance involving an act of violence by one ormore persons assembled in a group of at least three
Bloomsburg - LEGAL STUD - 400
Rikyu is a film depiction of the tragic death of the great tea master, Sen no Rikyu. Rikyu was asimple and peaceful old man whose passion in life was the practice and teaching of his Way of Tea. Thisfilm charts a time of violent change and court intrigu
Bloomsburg - LEGAL STUD - 400
What general purpose(s) do legal fictions serve? What are the three types of legal fictions thus faridentified in class? Briefly explain each with examples.Father of legal fiction, Lon Fuller claims that legal fictions are lies that are not intended to
Bloomsburg - LEGAL STUD - 400
I am writing to provide guidance on the legality of a recent proposal by the Chancellor'sOffice to build revenue and stop drug and alcohol abuse in dorms. My aim is to give insight to thesituation using my knowledge of the Constitution of the United Sta
Bloomsburg - LEGAL STUD - 400
August 2nd 2011Comp Lit 141Mid-TermThe occurrences in Oedipus the king, created by Sophocles, allow readers to imagine the coexistence ofman-kinds free will and the fate that Greek people believed guided everything in the worldharmoniously. During th
Bloomsburg - LEGAL STUD - 400
Sheldon E. and Joan S. Smith ScholarshipRyan Michael LawsonThroughout my life experiences and education at the University of Massachusetts, Amherst, Ihave been struck with the overwhelming urge to help others. It is very easy to become enveloped insel
Bloomsburg - LEGAL STUD - 400
Hiroshi Teshigahara chronicles the tragic, yet powerful final days of the great tea master, Sen noRikyu in his film Rikyu. This film is a moving tale of the relationship between two influential menduring a violent, warring period of sixteenth century Ja
Bloomsburg - LEGAL STUD - 400
Page 1November 22, 2010PolSci255Position PaperWhat should be done to win Senate ratification of the New START Treaty?Importance of ratifying the New START Treaty:Mrs. Hillary Clinton, it is important that the new START Treaty is ratified. In todays
Bloomsburg - LEGAL STUD - 400
Tay-Sachs and The Four Forces of EvolutionProfessor KingLab Section: Thursday 1:25pmFebruary 29th, 2012Ryan Michael LawsonCertain disorders are often more common among Ashkenazi Jews. Tay-Sachs disease is onesuch disorder common to these Jews. Jared
Yale - CPSC - 223
CS 223: Data Structures and Programming Techniques.Instructor: Jim AspnesExam 1March 2nd, 2005Work alone. Do not use any notes or books. You have approximately 60 minutes to complete this exam.Please write your answers on the exam. More paper is avai