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Tradeoff Between Reliability and Security in Multiple
Access Relay Networks Under
Falsified Data Injection Attack
Abstract:
We consider a multiple access relay network where multiple sources send
independent data to a single destination through multiple relays, which may inject
falsified data into the network. To detect the malicious relays and discard (erase)
data from them, tracing bits are embedded in the information data at each source
node. In addition, parity bits are added to correct the errors caused by fading and
noise. When the total amount of redundancy, tracing bits plus parity bits , is fixed,
an increase in parity bits to increase the reliability requires a decrease in tracing
bits, which leads to a less accurate detection of malicious behavior of relays, and
vice versa. We investigate the tradeoff between the tracing bits and the parity bits
in minimizing the probability of decoding error and maximizing the throughput in
multisource, multirelay networks under falsified data injection attacks. The energy
and throughput gains provided by the optimal allocation of redundancy and the
tradeoff between reliability and security are analyzed.

3. Existing System:
 The tradeoff between tracing bits and parity bits, where the former is
to identify the malicious relay nodes and discard the bits received
from them and the latter is to correct the errors caused by channel
impairments such as fading and noise.
 The energy gain and the throughput gain provided by the optimal
redundancy allocation.
 Data may not be useful at the destination, It becomes harder for the
destination to detect the malicious behavior of the adversary.
Proposed System:
 The benefits can extend the coverage, reduce network energy
consumption, and promote uniform energy drainage by exploiting
neighbors resources.
 In multiple access relay networks, relay nodes may combine the
symbols received from different sources to generate parity symbols
(packets) and send them to the destination.
 Traditional system without cooperative communication, its effect is
far more serious with cooperative communication.
 If a false packet is injected into the buffer of a node, the output of the
node will become polluted, and this may soon propagate to the entire
network.

4. Software Requirements:
Platform : JAVA(JDK 1.6)
Front End : JAVA Swing
Back End : MySQL
IDE : Net Beans 6.9
Operating System : Microsoft Windows XP
Hardware Requirements:
Processor : Pentium IV Processor
RAM : 512 MB
Hard Disk : 10GB
Monitor : 14” VGA COLOR MONITOR