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Ȩ Ȩ > ¿¬±¸¹®Çå > ¿µ¹® ³í¹®Áö > TIIS (Çѱ¹ÀÎÅͳÝÁ¤º¸ÇÐȸ)

TIIS (Çѱ¹ÀÎÅͳÝÁ¤º¸ÇÐȸ)

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) A Novel Hitting Frequency Point Collision Avoidance Method for Wireless Dual-Channel Networks
¿µ¹®Á¦¸ñ(English Title) A Novel Hitting Frequency Point Collision Avoidance Method for Wireless Dual-Channel Networks
ÀúÀÚ(Author) Hou-De Quan   Chuan-Bao Du   Pei-Zhang Cui  
¿ø¹®¼ö·Ïó(Citation) VOL 09 NO. 03 PP. 0941 ~ 0955 (2015. 03)
Çѱ۳»¿ë
(Korean Abstract)
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(English Abstract)
In dual-channel networks (DCNs), all frequency hopping (FH) sequences used for data channels are chosen from the original FH sequence used for the control channel by shifting different initial phases. As the number of data channels increases, the hitting frequency point problem becomes considerably serious because DCNs is non-orthogonal synchronization network and FH sequences are non-orthogonal. The increasing severity of the hitting frequency point problem consequently reduces the resource utilization efficiency. To solve this problem, we propose a novel hitting frequency point collision avoidance method, which consists of a sequence-selection strategy called sliding correlation (SC) and a collision avoidance strategy called keeping silent on hitting frequency point (KSHF). SC is used to find the optimal phase-shifted FH sequence with the minimum number of hitting frequency points for a new data channel. The hitting frequency points and their locations in this optimal sequence are also derived for KSHF according to SC strategy. In KSHF, the transceivers transmit or receive symbol information not on the hitting frequency point, but on the next frequency point during the next FH period. Analytical and simulation results demonstrate that unlike the traditional method, the proposed method can effectively reduce the number of hitting frequency points and improve the efficiency of the code resource utilization.
Å°¿öµå(Keyword) ad hoc networks   packet transmission success probability   code division networking scheme   data transmission rate   hierarchical distributed network structure   frequency hopping sequence   independent hit model   error correction code  
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