... gap between the image spectra equal to 2000 − 500 − W = 1000 29 Publisher: Tom Robbins Editorial Assistant: Jody McDonnell Executive Managing Editor: Vince O’Brien Managing Editor: David A. George Production ... sinc(6t)=⇒ H(f )= 1 6 Π( f 6 ) The energy spectral density of the output signal is G Y (f)= G X (f)|H(f)| 2 and with G X (f)= 1 α 2 +4π 2 f 2 we obtain G Y (f)= 1 α 2 +4π 2 f...
Ngày tải lên: 27/06/2014, 05:20
... j − 1 4πt sin πt + 1 4π 2 t 2 (cos πt − 1) 38 SOLUTIONS MANUAL Communication Systems Engineering Second Edition John G. Proakis Masoud Salehi Prepared by Evangelos Zervas Upper Saddle River, New Jersey ... |H(f)| 2 = sgn 2 (f) a) The energy spectral density of the output signal is G Y (f) =G X (f)sgn 2 (f)= G X (f) f =0 0 f =0 Since G X (f) does not contain any impu...
Ngày tải lên: 05/03/2014, 19:20
SOLUTIONS MANUAL Communication Systems Engineering Second EditionJohn G. Proakis ppt
... write ∞ n=−∞ |x n | 2 = −M n=−∞ |x n | 2 + M n=−M |x n | 2 + ∞ n=M |x n | 2 7 SOLUTIONS MANUAL Communication Systems Engineering Second Edition John G. Proakis Masoud Salehi Prepared by Evangelos Zervas Upper Saddle River, New Jersey ... The angle modulated signal can be interpreted both as a PM and an FM signal. It is a PM signal with phase deviation constant k p = 4 and...
Ngày tải lên: 28/03/2014, 17:20
SOLUTIONS MANUAL Communication Systems Engineering Second EditionJohn G. Proakis Masoud docx
... τ)= 1 2 Thus, S X (f)=F[R X (τ)] = 1 2 δ(f). 24 SOLUTIONS MANUAL Communication Systems Engineering Second Edition John G. Proakis Masoud Salehi Prepared by Evangelos Zervas Upper Saddle River, New Jersey ... Managing Editor: Vince O’Brien Managing Editor: David A. George Production Editor: Barbara A. Till Composition: PreT E X, Inc. Supplement Cover Manager: Paul Gourhan Suppleme...
Ngày tải lên: 27/06/2014, 08:20
SOLUTIONS MANUAL Communication Systems Engineering Second Edition John G. Proakis Masoud docx
... θ) = A 2 m(t) [cos(2π2f c t + θ) + cos(θ)] 44 SOLUTIONS MANUAL Communication Systems Engineering Second Edition John G. Proakis Masoud Salehi Prepared by Evangelos Zervas Upper Saddle River, New Jersey ... O’Brien Managing Editor: David A. George Production Editor: Barbara A. Till Composition: PreT E X, Inc. Supplement Cover Manager: Paul Gourhan Supplement Cover Design: PM Works...
Ngày tải lên: 27/06/2014, 17:20
SOLUTIONS MANUAL Communication Systems Engineering Second Edition John G. Proakis Masoud doc
... |H(f)| 2 = sgn 2 (f) a) The energy spectral density of the output signal is G Y (f) =G X (f)sgn 2 (f)= G X (f) f =0 0 f =0 Since G X (f) does not contain any impulses at the origin E Y = E X = 1 2α 27 5) ... sinc(6t)=⇒ H(f )= 1 6 Π( f 6 ) The energy spectral density of the output signal is G Y (f)= G X (f)|H(f)| 2 and with G X (f)= 1 α 2 +4π 2 f 2 we obtain G Y (f)= 1 α 2 +4...
Ngày tải lên: 27/06/2014, 17:20
Communication Systems Engineering Second Edition John G. Proakis Masoud pot
... |H(f)| 2 = sgn 2 (f) a) The energy spectral density of the output signal is G Y (f) =G X (f)sgn 2 (f)= G X (f) f =0 0 f =0 Since G X (f) does not contain any impulses at the origin E Y = E X = 1 2α 27 where ... = A 2 2 + A 2 2 + 4A 2 2 + 4A 2 2 =5A 2 42 b) Arguing as in the previous question G Y (f) =G X (f)sgn 2 (f)= Π(f) f =0 0 f =0 Since Π(f) does not contain any impulses a...
Ngày tải lên: 27/06/2014, 23:20
contemporary communication systems using matlab - proakis and salehi
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Ngày tải lên: 08/04/2014, 10:02
Communication Systems Engineering Second Edition John G pot
... θ) Problem 2.53 Taking the Fourier transform of e j2πf 0 t we obtain F[ e j2πf 0 t ]=−jsgn(f )δ(f −f 0 )=−jsgn(f 0 )δ(f − f 0 ) Thus, e j2πf 0 t = F −1 [−jsgn(f 0 )δ(f − f 0 )] = −jsgn(f 0 )e j2πf 0 t Problem ... 3.3 The following figure shows the modulated signals for A = 1 and f 0 = 10. As it is observed both signals have the same envelope but there is a phase reversal at t = 1 for the...
Ngày tải lên: 27/06/2014, 17:20
Principles of Digital Communication Systems and Computer Networks
... Ông cũng định nghĩa năng lượng kênh truyền, nó liên quan tới băng thông kênh truyền và tỉ sổ giữa công suất nguồn và công suất nhiễu . Dựa trên hai biện pháp, ông xây dựng định lý mã hóa nguồn ... đầu những hiểu biết chuyên về viễn thông. Chúng ta nghiên cứu đóng g p của Shannon trong lĩnh vực thông tin liên lạc hiện đại trong chương này. 2.1 Yêu cầu của hệ thống truyền tin (communication...
Ngày tải lên: 18/09/2012, 10:13