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Employing the one-sender-multiple-receiver technique in wireless lans (2010)
| Content Provider | CiteSeerX |
|---|---|
| Author | Zhang, Zhenghao Bronson, Steven Xie, Jin Wei, Hu |
| Description | In this paper, we study the One-Sender-Multiple-Receiver (OSMR) transmission technique, which allows a sender to send to multiple receivers on the same frequency simultaneously by utilizing multiple antennas at the sender. OSMR has the potential to significantly improve the downlink performance of wireless LANs, because with OSMR, the Access Point (AP) can send distinct packets to multiple computers at the same time. To study the practicability of OSMR in the indoor environments typical to wireless LANs, we implemented a prototype OSMR transmitter/receiver with GNU Software Defined Radio and conducted experiments in a university building. To the best of our knowledge, this is the first implementation and experimentation of OSMR. Our results are positive and show that the wireless channels allow OSMR for a significant percentage of the time. We also note that with OSMR, packet scheduling is needed at the AP to determine when a packet should be sent and whether it should sent together with other packets using OSMR. We focus on the problem of maximizing network throughout, and propose a simple algorithm and 1 prove that it has a performance ratio of 1+ √ 2 compared to the optimal algorithm. We evaluated OSMR and our algorithm with packet traces collected from 802.11a networks, and the results show that our algorithm significantly improves the network throughput. Our algorithm is simple and is suitable for the implementations in APs with inexpensive processors. 1 in Proc. IEEE InfoCom |
| File Format | |
| Language | English |
| Publisher Date | 2010-01-01 |
| Access Restriction | Open |
| Subject Keyword | Packet Scheduling Wireless Lan Downlink Performance First Implementation Access Point Performance Ratio Simple Algorithm Distinct Packet Gnu Software Defined Radio Packet Trace Multiple Antenna Significant Percentage Indoor Environment Wireless Channel University Building Prototype Osmr Transmitter Receiver Optimal Algorithm Network Throughput Transmission Technique Inexpensive Processor One-sender-multiple-receiver Technique |
| Content Type | Text |
| Resource Type | Article |
