无线对等点发现的空间性能分析与设计原则
Spatial Performance Analysis and Design Principles for Wireless Peer Discovery
摘要：
在服务于各种基于邻近度的应用的无线对等网络中，对等点发现是识别对等点可以与之通信的其他对等点的关键，并且对其性能的理解是设计高效发现操作的基础。综合考虑无线信道、节点空间分布和发现操作参数等因素，分析了无线节点发现的性能。成功发现的对等体的平均数量以两种广泛使用的信道模型的封闭形式表示，即，干扰受限Nakagami-m衰落模型和非零噪声的瑞利衰落模型，当对等体根据均匀泊松点过程在空间上分布时。这些有见地的表达式导致的关键操作参数，包括传输概率，所需的无线资源量，调制和编码方案（MCS）的水平，和发射功率的设计原则。此外，阴影的空间性能和建议的设计原则的影响进行了评估，使用数学分析和模拟。
英文摘要：
In wireless peer-to-peer networks that serve various proximity-based applications, peer discovery is the key to identifying other peers with which a peer can communicate and an understanding of its performance is fundamental to the design of an efficient discovery operation. This paper analyzes the performance of wireless peer discovery through comprehensively considering the wireless channel, spatial distribution of peers, and discovery operation parameters. The average numbers of successfully discovered peers are expressed in closed forms for two widely used channel models, i.e., the interference limited Nakagami-m fading model and the Rayleigh fading model with nonzero noise, when peers are spatially distributed according to a homogeneous Poisson point process. These insightful expressions lead to the design principles for the key operation parameters including the transmission probability, required amount of wireless resources, level of modulation and coding scheme (MCS), and transmit power. Furthermore, the impact of shadowing on the spatial performance and suggested design principles is evaluated using mathematical analysis and simulations.
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