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Network Scheduling. JOINT PHY AND MAC OPTIMIZATION FOR WIRELESS SCHEDULING

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мягкая обложка
220 страниц
2009 год

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3231 руб

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The second thrust focuses on distributed opportunistic scheduling (DOS) for throughput maximization in wireless ad hoc networks based on random access. It consists of the following three main thrusts. In the first thrust, rate optimization for multicast communications at the MAC layer is studied. We characterize the optimal scheduling policies based on different network models. This book studies wireless scheduling by jointly optimizing the physical (PHY) layer and the medium- access-control (MAC) layer. The third thrust is on developing a cross-layer optimization framework for effective interference management towards understanding the fundamental tradeoffs among possible MIMO gains in multi-hop networks. To ensure multicast reliability when no retransmission is required at the MAC layer, transport layer erasure coding is used for reliability enhancement. For Threshold-T based multicast policies, the transmission rates are optimized to maximize the network throughput.

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wireless networks from the command line For wireless interfaces, there are two additional commands that are useful for configuration: iwconfig , which sets wireless parameterssuch as the channel, encryption, and ESSIDand iwlist , which can be used to scan for available networks. iwconfig will display current settings if no parameters are given: # iwconfig lo no wireless extensions. eth0 no wireless extensions. sit0 no wireless extensions. wlan0 IEEE 802.11b ESSID:"" Nickname:"zd1201" В В В В В В В В Mode:Managed Channel:6 Access Point: 00:90:4C:7E:00:29 В В В В В В В В Bit Rate:11 Mb/s В В В В В В В В Retry:off RTS thr:off Fragment thr:off В В В В В В В В Encryption key:off В В В В В В В В Power Management:off В В В В В В В В Link Quality:0/128 Signal level=60/128 Noise level:0/128 В В В В В В В В Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 В В В В В В В В Tx excessive retries:0 Invalid misc:0 Missed beacon:0 Here you can see that this interface has associated with an access point with a MAC ...»

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Network Scheduling. JOINT PHY AND MAC OPTIMIZATION FOR WIRELESS SCHEDULING Weiyan G. [url=http://www.booksiti.net.ru/books/14400350][img]http://www.booksiti.net.ru/books/14400350.jpg[/img][/url]

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Network Scheduling. JOINT PHY AND MAC OPTIMIZATION FOR WIRELESS SCHEDULING Weiyan G. http://www.booksiti.net.ru/books/14400350

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