twouser_2011-1.zip - In the first protocol (Protocol 1), a
node relays the signal received from the primary to the other
nodes only if the signal energy is sufficiently large. In the second
protocol (Protocol 2), given the knowledge of channel gains to
the other nodes, a node transmits only if the channel gains are
large.,2012-12-11 20:21:15,下载1次
Tung-Pham-PhD.zip - This thesis is mainly concerned with power allocation issues in wireless relay
networks where a single or multiple relays assist transmission from a single or multiple
sources to a destination.,2012-12-11 20:18:23,下载6次
multiuser_2007-1.zip - We first
consider multiuser single carrier networks and develop sufficient
conditions for agility gain when the cognitive population is arbitrarily
large. We then propose a practical algorithm which allows
cooperation between cognitive users in random networks. Finally,
we provide an example to illustrate the concepts developed in
this paper,2012-12-11 20:13:40,下载2次
DiversityReceive.zip - Diversity combining is specifically
targeted to counteract small scale fading. We will therefore use slow, flat, Rayleigh fading as our
model for the signal fluctuation. It must be emphasized that the Rayleigh model is the easiest and
most tractable. However, this model is not valid in all situations. The results we present here will
therefore be only “ballpark” figures, to illustrate the workings of diversity combining.,2012-12-11 20:11:30,下载2次
btech_prj.zip - A new and efficient algorithm for high-density salt
and pepper noise removal in images and videos is proposed.The existing non-linear filter like Standard Median Filter
(SMF), Adaptive Median Filter (AMF), Decision Based
Algorithm (DBA) and Robust Estimation Algorithm (REA)
shows better results at low and medium noise densities. At high
noise densities, their performance is poor. A new algorithm to
remove high-density salt and pepper noise using modified
sheer sorting method is proposed,2012-12-11 20:08:06,下载12次
Agility-improvement-1.zip - In this paper, we illustrate the benefits of cooperation
in cognitive radio. Cognitive (unlicensed) users need
to continuously monitor spectrum for the presence of primary
(licensed) users. We show that by allowing the cognitive radios
operating in the same band to cooperate we can reduce the
detection time and thus increase the overall agility,2012-12-11 19:58:33,下载5次