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This paper studies a multiple access control protocol, hierarchy schedule sensing protocol, for CDMA wireless data centric networks characterized by high terminal density in a small area. In particular, this paper focuses on the impact of packet collision with capture effect on performance of a network based on the protocol, where a common-coded permission frame beacon is used to schedule transmission requests to avoid collisions. To further reduce scheduling delay, hierarchical group-based coding is introduced to the scheme. The performance of such a network is analyzed considering packet collisions, capture effect, multipath-interference (MI), and multiuser interference (MUI) with the help of a Markovian chain model. The average packet collision rate with and without capture effect is explicitly derived. The performance of the protocol is compared with traditional receiver-based code protocol to shown that, despite its low complexity, it is a fairly robust multiple access control protocol featured by uniformly high throughput and low delay.
Multiple access control protocol, wireless network, CDMA, capture effect, multipath.

H. Chen and W. Tea, "Hierarchy Schedule Sensing Protocol for CDMA Wireless Networks-Performance Study under Multipath, Multiuser Interference, and Collision-Capture Effect," in IEEE Transactions on Mobile Computing, vol. 4, no. , pp. 178-188, 2005.
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