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 Message Boards » » ECE402 problem sessions Page [1]  
ncsu_engr
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could not go due to exams both days. were they like his office hours, or did you guys do any group problem discussion/solving? did he say anything about the exam?

12/7/2005 4:38:50 PM

jakis
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damn i forgot all about these

12/7/2005 5:14:12 PM

BigDave41
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ha, i forgot about them too. but i probably wouldn't have gone either way. i don't think it should be too bad. test 3 should be pretty straight-forward. there are only a few topics from which he can ask questions...and none of them are hard.

as for the final, i don't think i'll be taking that because i don't want to go back over test 1 and 2 material...but, i would guess it would be similar to previous test questions...not too difficult

12/7/2005 5:22:13 PM

robster
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it was pretty good today.. he stayed an extra 20 minutes and there were about 20 of us there getting great secrets for his exam questions... practically handed us the exam!

12/7/2005 5:25:17 PM

virga
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true. he gave key and vast insight into how he chooes problems for the exam. i've never felt as prepared as i feel now after having gone to the review session.

12/7/2005 6:21:09 PM

BigDave41
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well dang. sounds like i missed out. you review session attendees care to share the insight?

12/7/2005 6:25:16 PM

rosschilen
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can we have 3 cheat sheets for test3/final?

12/7/2005 7:29:16 PM

jakis
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yes please share

^yes three sheets

[Edited on December 7, 2005 at 7:36 PM. Reason : asdf]

12/7/2005 7:36:14 PM

Manda
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i sense some sarcasm...

12/7/2005 7:45:50 PM

jakis
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How do you determine the symbol rate that uses the entire band knowing the channel bandwidth?

On HW#8, Problem 2:
The channel bandwidth is 100kHz, which gives an fs=66.6kbaud

On '04 Quiz 3, Problem 3:
The channel bandwidth is 6MHz -> fs=3Ms/s

No explanation as to where these numbers came from

12/7/2005 7:59:25 PM

Pi Master
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It was really sad on Tuesday. I was the only person there and I didn't have any questions for him... so we both just left right after he got there.


Also, who noticed the sign in the lobby today? I made an addition below, "Break = "

12/7/2005 10:22:39 PM

Pi Master
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Quote :
"The channel bandwidth is 100kHz, which gives an fs=66.6kbaud"


r = 0.5

W = (1 + r) * WN

W = 1.5 * WN

W = 100 kHz

WN = 66.7 kHz

fs' = WN = 66.7 kbaud

12/7/2005 10:26:07 PM

Pi Master
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I'm gonna be ready

12/8/2005 12:33:10 AM

robster
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quiz 3 problem 3....

W = (1 + r)WN = 2fs ... and r = 1

2150-2156 MHz so that means the W is 6 mhz...(channel bandwidth) and therefore, Wn=Fs(bandpass)
and so w=2fs so fs=3Ms/s and Wn = 3MHz

12/8/2005 9:13:19 AM

Pi Master
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That went alright. The 'final' part seemed way too easy. I was worried with how easily I got the first and the last.

12/8/2005 3:21:19 PM

BigDave41
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^i concur

12/8/2005 4:01:37 PM

virga
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final part was easy.

for some reason, questions 3, 4 on white really got me. q3 i just couldn't get after an hour of trying everything i could think of. by the time i was on 4, i was pissed tired and not in the mood, so i didn't put too much thought into it. quiz3 will def be the one to be dropped for me.

12/8/2005 5:18:34 PM

Pi Master
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I knew the final part was too easy to be true:

75

But on Q3:

99

12/12/2005 2:06:01 PM

virga
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hah, i was backwards. i completely stalled on Q3 and got a 70. but on the final i got a 99...yay!

but i kinda figured i was going to do worse on that one about half way through, so i knew it was going to be dropped and i just let it slide.

my raw average is an A..i wonder if he'll curve. i mean, i know he will, i just want my official grade

[Edited on December 12, 2005 at 2:13 PM. Reason : asdf]

12/12/2005 2:12:22 PM

Pi Master
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My final average is an 84.... a B+ would be nice

12/12/2005 2:17:08 PM

statepkt
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Damn you 2 are screwing up the averages

How did everyone else do?

12/12/2005 2:34:55 PM

BigDave41
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crappy and crappy. 66 and 72. i was surprised i did better on the final since i didn't prepare for that one...and apparently i made some big mistakes on quiz 3. luckily i did better on my first 2 tests, but a crappy hw average hurt me. my final average was 75.1...a C+ will do i suppose. i should have done work in this class.

12/12/2005 3:30:24 PM

rosschilen
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the hw average is killing me. anybody else think the hw grader was really strict?

12/12/2005 4:13:58 PM

statepkt
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not really, I have a 91.65 average on HW, and my buddies have an even higher average

12/12/2005 4:19:11 PM

Pi Master
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Quote :
"Quiz 3*
mean=59
high=99
low=22"


Quote :
"Note that Q3 turned out to be harder than the
other exams - I will compensate for that in
assigning the final grades.
"


w00t for me

12/12/2005 4:57:31 PM

Manda
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um, the hw avg is out of 120...
i was like 92!? did i even make a 92 on any of the hws? no...hehe

but yea...very happy with my B, for the C level of work I put in

12/12/2005 8:26:43 PM

Pi Master
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B+ for me

12/12/2005 8:35:03 PM

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