Broadband Powerline Communications Networks Design phần 7 pot

... investigated for implementa- tion in various telecommunications technologies (ATM, modern IP networks, etc.). Thus, 184 Broadband Powerline Communications Networks realized by redirecting the transmission ... 5.55 Realization of priorities in contention MAC protocols 160 Broadband Powerline Communications Networks C C C C 0 S S 0 012345 67 t Collision resolution interval (CR...

Ngày tải lên: 14/08/2014, 01:21

... higher Broadband Powerline Communications Networks H. Hrasnica, A. Haidine, and R. Lehnert  2004 John Wiley & Sons, Ltd ISBN: 0- 470 -8 574 1-2 74 Broadband Powerline Communications Networks Time Amplitude ... · ∞  n=−∞  T b (t − nT b ) cos(2πf n t +φ n )(4.22) 0 2 4 7 1 6 5 3 0 2 4 7 1 6 5 0 2 7 1 3 6 5 0 2 4 7 1 3 6 5 0 4 7 1 3 6 5 2 0 4 7 1 3 6 5 0 2 4...

Ngày tải lên: 14/08/2014, 01:21

... rare requests (average packet size: 1500 bytes) 226 Broadband Powerline Communications Networks confirmed by the simulation results (Fig. 6. 17) . T sig = t RTT 2 + t Ack (6.6) T sig – average signaling ... better than any investigated one-step protocol in networks with both rare and frequent transmission requests. 234 Broadband Powerline Communications Networks 1 10 100 1000...

Ngày tải lên: 14/08/2014, 01:21

... telecommunications services with higher data rates and Broadband Powerline Communications Networks H. Hrasnica, A. Haidine, and R. Lehnert  2004 John Wiley & Sons, Ltd ISBN: 0- 470 -8 574 1-2 Broadband ... optical telecommunications networks offer higher data rates than any other communications technology. Frequent usage of optical transmission systems within 4 Broadband...

Ngày tải lên: 14/08/2014, 01:21

... Average Quasi-peak Average 0.15–0.50 97 87 84 74 84 74 74 –64 5–30 877 474 64 3.4 Disturbance Characterization 3.4.1 Noise Description Because the power cables were designed only for energy transmission, ... (peak) Measured at (m) 1–1 .70 5 15 47, 715/frequency (kHz) 1 .70 5–10 100 30 10–13.553 30 30 13.553–13.5 67 10,000 30 13.5 67 26.96 30 30 26.96– 27. 28 10,000 (average) 3 27. 28 30 3...

Ngày tải lên: 14/08/2014, 01:21

... 2Symbol 1 0123 45 7 0415 26 37 Error burst Channel De-interleaver 0415 26 37 4 671 230 6 5 Figure 4.25 Operations of simple interleaving strategy 128 Broadband Powerline Communications Networks mechanisms ... control functions, such as traffic Broadband Powerline Communications Networks H. Hrasnica, A. Haidine, and R. Lehnert  2004 John Wiley & Sons, Ltd ISBN: 0- 470 -...

Ngày tải lên: 14/08/2014, 01:21

... realization of various CDMA systems. 144 Broadband Powerline Communications Networks R xx (t) t/ T c 1/ T c f N = 7 −1 X p N . T c T c t +1 −1 DC = 0 0− NN Figure 5. 17 Autocorrelation and the frequency ... set {−9, −1, +7} according to Eq. (5.11), because t(r) = 9 according to Eq. (5.13). This autocorrelation function is presented in Fig. 5.23. 158 Broadband Powerline Communi...

Ngày tải lên: 14/08/2014, 01:21

... is carried out; Broadband Powerline Communications Networks H. Hrasnica, A. Haidine, and R. Lehnert  2004 John Wiley & Sons, Ltd ISBN: 0- 470 -8 574 1-2 200 Broadband Powerline Communications Networks a ... affected, or not affected by the disturbances. 214 Broadband Powerline Communications Networks Packet size (bytes) 1500 Probability 0.30 17 40 552 576 0.12 2...

Ngày tải lên: 14/08/2014, 01:21

... allocation, IEEE Journal on Selected Areas in Communications, 17( 10), 174 7– 175 8 October 1999. 254 Broadband Powerline Communications Networks 0.2 0.3 0.4 0.5 0.6 0 .7 0.8 0.9 1 20 40 60 80 100 120 140 160 ... hoc networks, Wireless Networks, 7, 371 –384 2001. [Yang98] S. C. Yang, CDMA RF System Engineering, Artech House, Inc., USA, 1998, ISBN 0-89006- 991-3. 256 Broadband...

Ngày tải lên: 14/08/2014, 01:21

... Broadband Powerline Communications Networks 2.2 Powerline Communications Systems 2.2.1 Historical Overview PowerLine Communications is the usage of electrical power supply networks for com- munications ... areas, low-voltage networks are realized with underground cables, whereas in rural areas they exist usually as overhead networks. 32 Broadband Powerline Communica...

Ngày tải lên: 17/07/2014, 09:29