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Corrections to Digital Communications, 4th Edition 1. Page 31, Equation (2.1-54) First line: yl instead of y2 Second line: gn instead of g1 2. Page 163, Equation (4.2-30) ∞
should be: s(t) = ao/2 +
Σ k=1
3. Page 163, Equation (4.2-31) T
should be: ak = (2/T) ∫ s(t) cos 2πkt/T dt , k>0 0
T
bk = (2/T) ∫ s(t) sin 2πkt/T dt , k>1 0
4. Page 178, 7 lines from the top should be: sqrt (2ε)
instead of
ε sqrt (2)
5. Page 238, Equation (5.1-19) should be: h(T-τ ) instead of h(t-τ ) 6. Page 238, two lines below Equation (5.1-20) should be: y2 (T) instead of y2(t) n
n
7. Page 244, Equation (5.1 – 45) should be: m = 1,2,…M 8. Page 245, Equation (5.1-48) should be: : sqrt (εb)
instead of
sqrt (εn)
9. Page 309, Equation (5.4-39) R1 sqrt (2εs/N0) instead of sqrt (2εsR1/N0) 10. Page 318, Equation (5.5-17) add the term: – (N0)dBW/Hz 11. Page 366, Equation (6.4-3) Replace + sign with – sign in the second term of the summation 12. Page 367, Equation (6.4-6) Replace + sign with – sign in the second term of the summation 13. Page 367, Equations (6.4-8) and (6.4-9) add the subscript L to the log-likelihood function 14. Page 422, lines 2 and 3 above Equation (8.1-14) delete the phrase “no more than” 15. Page 468, 12 lines from the top and 5 lines from the bottom should be:
b < instead="">
b
16. Page 491, Figure 8.2-15 solid line corresponds to soft-decision decoding broken line corresponds to hard-decision decoding 17. Page 500, Equation (8.2-41) In the denominator, Mk should be Mj and Mj should be MJ
18. Page 591, Figure P9.9 The lower shaping filter in the modulator and demodulator, q(t) should have a “hat” on it
19. Page 609, 6 lines above Equation (10.1-34)
ε k+1– L-1
should be
ε k+l – L-1
20. Page 646, Fi