Broadband Powerline Communications Networks Design phần 10 pptx

... 250 Broadband Powerline Communications Networks 100 100 0 10, 000 50 100 150 200 250 300 350 400 450 500 Transmission delay (ms) Number ... Journal on Selected Areas in Communications, 17 (10) , 1747–1758 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 80 100 120 140 160 180 200 Throughput Number ... hoc networks,...

Ngày tải lên: 14/08/2014, 01:21

... interleaving strategy 128 Broadband Powerline Communications Networks mechanisms for error handling in PLC networks. Accordingly, both multiple access scheme and MAC protocol have to be designed to allow ... nature of the traffic characteristics is also recognized in many research studies 102 Broadband Powerline Communications Networks Hamming Codes Hamming codes are a subcla...

Ngày tải lên: 14/08/2014, 01:21

... 137 t +1 −1 t +1 −1 t +1 −1 t +1 −1 t +1 −1 t +1 −1 101 1 0 110 1 010 100 1 S a ( t ) C a ( t ) S a ( t )C a ( t ) S b ( t ) C b ( t ) S b ( t )C b ( t ) Figure 5 .10 CDMA signal generation/coding – example t +1 −1 +2 −2 S a ( t )C a ( t ) ... neighboring communications systems, and so on. User 1 User 2 User 3 User M −1 User M Power Frequency Figure 5.24 Interferences between users of a...

Ngày tải lên: 14/08/2014, 01:21

... 8 Broadband Powerline Communications Networks Big customers Individual subscribers Access networks WAN Figure 2.1 General structure of telecommunications networks to the subscribers. ... optical telecommunications networks offer higher data rates than any other communications technology. Frequent usage of optical transmission systems within 4 Broadband Powerline Communica...

Ngày tải lên: 14/08/2014, 01:21

... 47,715/frequency (kHz) 1.705 10 100 30 10 13.553 30 30 13.553–13.567 10, 000 30 13.567–26.96 30 30 26.96–27.28 10, 000 (average) 3 27.28 30 30 100 120 80 60 0 0 5 10 15 20 30 25 20 40 Radiated ... second supply network (Fig. 3 .10) . Therefore, the supply 70 Broadband Powerline Communications Networks Table 3.6 Limits for conducted common-mode disturbances at telecommunication...

Ngày tải lên: 14/08/2014, 01:21

... coded communications system Table 4.2 Example of mapping function of a binary (2,5) linear code m c 00 0 1100 01 101 01 10 10111 11 1100 0 Binary (5,2) code with rate r = 2/5, where C ={0 1100 , 101 01, ... higher Broadband Powerline Communications Networks H. Hrasnica, A. Haidine, and R. Lehnert  2004 John Wiley & Sons, Ltd ISBN: 0-470-85741-2 74 Broadband Powerline...

Ngày tải lên: 14/08/2014, 01:21

... 0.1 1 10 100 100 0 a = 1.0 a = 0.1 a = 0.01 a = 0.001 a = 0 Utilization Offered load Figure 5.38 Network utilization for nonpersistent CSMA protocol 186 Broadband Powerline Communications Networks the ... investigated for implementa- tion in various telecommunications technologies (ATM, modern IP networks, etc.). Thus, 184 Broadband Powerline Communications Networks realiz...

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: 0-470-85741-2 200 Broadband Powerline Communications Networks a ... with joint control messages, an 210 Broadband Powerline Communications Networks 6.2.2.2 Disturbance Modeling As presented in Sec. 3.4.4, the disturbances in PLC...

Ngày tải lên: 14/08/2014, 01:21

... one-step protocol in networks with both rare and frequent transmission requests. 234 Broadband Powerline Communications Networks 1 10 100 100 0 10, 000 100 ,000 1e + 06 50 100 150 200 250 300 350 ... load per station under certain RTT P – average packet size 228 Broadband Powerline Communications Networks 10 100 100 0 10, 000 50 100 150 200 250 300 350 400 450 Del...

Ngày tải lên: 14/08/2014, 01:21

... network 14 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 ... areas, low-voltage networks are realized with underground cables, whereas in rural areas they exist usually as overhead networks. 32 Broadband Powerline Communications...

Ngày tải lên: 17/07/2014, 09:29