Capacity Increase Of Multi-Hop Cellular WLANs Exploiting Data Rate Adaptation And Frequency Recycling
White Papers These recycled frequencies are used at a reduced transmission power only in the interior of the cell, close to the access point. The use of intermediate terminals for relaying traffic in infrastructure based wireless systems promises improvements...
[February 17, 2006, 0:01]
OFDM Code Division Multiplexing With Unequal Error Protection And Flexible Data Rate Adaptation
White Papers This combination enables a robust transmission with flexible error protection and data rate adaptation for parallel data streams by exploiting additional diversity due to CDM. In this paper, an OFDM-CDM (Orthogonal Frequency Division Multiplexing...
[February 17, 2006, 0:01]
High Efficiency Wireless LAN For Multimedia Home Networks
White Papers Methods for a transmitter based link adaptation are evaluated to increase the reliability of the physical data transmission. This paper describes the problems of wireless LAN usage in the user's home with focus on media transmission.
[August 7, 2008, 1:18]
Multimode Precoding For MIMO Wireless Systems
White Papers This adaptation is done by varying the number of substreams and the rate of each substream in a precoded spatial multiplexing system. The basic idea is to use transmitter channel information to adaptively vary the transmission scheme for a fixed...
[August 10, 2007, 11:07]
Distributed Cooperative Rate Adaptation For Energy Efficiency In IEEE 802.11-Based Multi-Hop Networks
White Papers This paper studies the problem of using the rate adaptation technique to achieve energy efficiency in an IEEE 802.11-based multi-hop network. The key technique to attack this problem is distributed cooperative rate adaptation.
[June 16, 2006, 1:00]
Adaptive Transmit Power Control In IEEE 802.11a Wireless LANs
White Papers This paper demonstrates the energy-efficient Distributed Coordination Function (DCF) operation of IEEE 802.11a wireless LANs (WLANs) via TPC and Physical Layer (PHY) rate adaptation. The key idea is to enforce an RTS/CTS frame exchange before each...
[January 20, 2006, 0:01]
Joint PHY/MAC Based Link Adaptation For Wireless LANs With Multipath Fading
White Papers Thus, a cross-layer based design approach along with link adaptation is required to improve the network performance under different channel conditions. Most multimedia applications use small payload sizes in order to ensure reliable, low latency...
[August 13, 2007, 15:14]
Integrated Access Control And Detection For Multimedia CDMA Systems: Part II - Access Control
White Papers The proposed joint access control and receiver adaptation algorithm involves real-time traffic activity prediction, optimization of filter coefficients every time the interference pattern changes and data scheduling according to the power control...
[August 10, 2004, 6:19]
Bluetooth Bite Blunted By MS Pullout
News Another factor in its favour is that 802.11b depends upon the same networking protocols and standards as traditional networking, so adaptation should be fairly easy. Transmission speeds can reach up to 720Kbps within the 2.4GHz band--the same band...
[April 6, 2001, 7:31]
