Uncorrected Author Proof
Journal of Intelligent & Fuzzy Systems xx (20xx) x–xx
DOI:10.3233/JIFS-169678
IOS Press
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FPGA-based research of monitoring
MPCPD-CSMA protocol in cognitive
wireless networks
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Zhi Xu
a
, Hongwei Ding
a,∗
, Qianlin Liu
b
, Zhijun Yang
a
, Liyong Bao
a
and Gang Zhan
a
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a
School of information, Yunnan University, Kunming, China5
b
Yunnan Military Command Region, Kunming,Yunnan, China6
Abstract. In order to solve the contradiction between wireless network application requirements and increasingly scarce
spectrum resources, cognitive wireless network technology emerged. Based on the characteristics of wireless network nodes
and combining multiple hybrid control strategies, this paper proposes a multi-priority dual-clock probability detection
CSMA(MPCPD-CSMA) protocol with a monitoring mechanism. The field-programmable gate array (FPGA) hardware
circuit is used as an experimental research platform for the first time. Cognitive wireless network MAC protocol design and
implementation. The design took full advantage of the flexibility of the FPGA, using a hardware description language Verilog
HDL and schematic input combined with the QuartusII9.0 circuit design. By comparing the statistical values of the circuit
system with the theoretical values, it is verified that the design has the characteristics of good real-time performance, high
reliability, and strong portability. It can effectively reduce system node energy consumption, improve system throughput, and
can be applied to wireless networks.
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Keywords: cognitive wireless network, hybrid control strategy, field programmable gate array, schematic input, throughput
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1. Introduction18
The core of Cognitive Wireless Networks [1]19
is to allocate management and use split spectrum20
resources so as to perform dynamic deployment.
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These fragmented spectrum resources form multi-
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ple channels. Therefore, MAC protocols in cognitive
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wireless networks are mainly based on Multi-channel
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MAC protocol. The main work accomplished by
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these protocols is to obtain network information,
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allocate corresponding channels for different com-27
munication nodes, and eliminate conflicts between28
data packets so that as many nodes as possible can
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share network resources and communicate at the30
same time.31
∗
Corresponding author. Hongwei Ding, School of informa-
tion, Yunnan University, Kunming 650504, China. E-mail:
775862901@qq.com.
The development of the MAC protocol in the wire- 32
less network environment originated in the early
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1970s. The Aloha protocol was first implemented
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and put into use by the University of Hawaii in the
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United States. Then the CSMA protocol emerged.
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This scheme can avoid sending nodes to a large 37
extent. The conflict between each other improves 38
channel transmission efficiency and reduces node 39
energy consumption. The basic CSMA protocol can 40
reach a higher throughput but its utilization of the
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channel is still insufficient, and the room for improve- 42
ment remains. Therefore, scholars have studied this
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issue. The paper [2, 3] has made multi-channel
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improvements in basic probabilistic detection and
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P persistence. It divides the system channels into
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high and low priority classes, allocates channel 47
resources according to load conditions, and effec- 48
tively improves system throughput. Next, in [4], a 49
dual-clock multi-channel P-adaptive CSMA protocol 50
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