DocumentCode :
744541
Title :
Performance Analysis of Asynchronous Multicarrier Wireless Networks
Author :
Lin, Xingqin ; Jiang, Libin ; Andrews, Jeffrey G.
Volume :
63
Issue :
9
fYear :
2015
Firstpage :
3377
Lastpage :
3390
Abstract :
This paper develops a novel analytical framework for asynchronous wireless networks deploying multicarrier transmission over flat-fading channels. Nodes in the network have different notions of timing; therefore, from the viewpoint of a typical receiver, the received signals from different transmitters are asynchronous, leading to a loss of orthogonality between subcarriers. We first develop a detailed link-level analysis based on OFDM, based on which we propose a tractable system-level signal-to-interference-plus-noise ratio (SINR) model for asynchronous OFDM networks. The proposed model is used to analytically characterize several important statistics in asynchronous networks with spatially distributed transmitters, including: (i) the number of decodable transmitters; (ii) the decoding probability of the nearest transmitter; and (iii) the system throughput. The system-level loss from lack of synchronization is quantified, and to mitigate the loss, we compare and discuss four possible solutions including extended cyclic prefix, advanced receiver timing, dynamic receiver timing positioning, and semi-static receiver timing positioning with multiple timing hypotheses. The model and results are general, and apply to ad hoc networks, cellular systems, and neighbor discovery in device-to-device (D2D) networks.
Keywords :
Interference; OFDM; Receivers; Signal to noise ratio; Synchronization; Transmitters; Asynchronous networks; device-to-device; multicarrier transmission; stochastic geometry;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOMM.2015.2450215
Filename :
7137650
Link To Document :
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