549 search results - page 34 / 110 » Omnidirectional Relay in Wireless Networks |
TMC
2010
13 years 9 months ago
2010
—One important application of cooperative communications is to extend coverage area in wireless networks without increasing infrastructure. However, a crucial challenge in implem...
SECON
2007
IEEE
14 years 5 months ago
2007
IEEE
— Multiuser diversity is a phenomenon caused by channel variations among different users in a wireless network. Cooperative relaying provides another form of diversity due to the...
CORR
2010
Springer
13 years 11 months ago
2010
Springer
Equal allocation of bandwidth and/or power may not be efficient for wireless multi-user networks with limited bandwidth and power resources. Joint bandwidth and power allocation s...
ISCC
2005
IEEE
2005
IEEE
Preserving Area Coverage in Wireless Sensor Networks by Using Surface Coverage Relay Dominating Sets
14 years 4 months ago
— Sensor networks consist of autonomous nodes with limited battery and of base stations with theoritical infinite energy. Nodes can be sleep to extend the lifespan of the networ...
CORR
2008
Springer
13 years 11 months ago
2008
Springer
This paper presents a cross-layer approach to jointly design adaptive modulation and coding (AMC) at the physical layer and cooperative truncated automatic repeat request (ARQ) pro...