Rec2Sol - vvsvuvn .r , bVVI Page 1/4 ECES-306 Modulation...

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Unformatted text preview: vvsvuvn .r , bVVI Page 1/4 ECES-306 Modulation and Coding Recitation #2 1) Assume we have a message composed of triangular and rectangular waves in succession which switches every 1 second between a positive rectangle and a negative triangle (both with amplitude 1 1). Assume that each triangle and rectangle has a total width of 1 second. ‘ (a) Sketch the modulated signal when the modulation is Classical AM with “=0. 5 Indicate the signal envelope with dashed lines. 90* P‘;o~5 M 6? W 3W2}, Jg-J'S 2) A=Q.. Recitation #2 2) Consider the signal mm = Sin02( 00b '* 3sinc (25k) (a) Writeanexpression forlM((o)| 3‘. .L 6.)" Met ( co ~ ,. _,_ . v 7‘ m (N mM’QQ :5 read ('39 . Hm , w:25 B—mu awc(259¢\e) Ami?) “W “G‘éflé—fil‘fifl 6» wow 4—» —~(; bogs-r) 13 1° 8;; m hi“: 4 githrSt) I :7 an)—.5xzt§6 AQEODB) ¥3xflmck<f3 «not, H v , I 0 “9% “(fivgwwg—a 25 (b) Sketch |M(w)|. Label b th axes cannilly. 3 Uctober 3'", 200/ Page 3/4 ECES-306 Modulation and Coding mg) 7 5m; {109+} 3M = 5 min-9,: + wig: N > Mag 3; ‘ 109” “13%; a ‘4 “10W " M X CV) “cit ’; 5 “Lb “Li? ucmoer 3'", 200/ Page 2/4 ECES-306 Modulation and Coding Recitation #2 _ I . (c) Repeat for u—l .. __ - A: ~—.——- 2 0 f“ “J‘s! 1.: Wee.) $0 medial “45m dz/‘J‘W‘Bou M Lemflg [Java f“? M (1'0. ...
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Rec2Sol - vvsvuvn .r , bVVI Page 1/4 ECES-306 Modulation...

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