Title :
Random Access Algorithm of LTE TDD System Based on Frequency Domain Detection
Author :
Yu, Chen ; Xiangming, Wen ; Wei, Zheng ; Xinqi, Lin
Author_Institution :
Sch. of Inf. & Commun. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, the basic process of random access is briefly introduced first, a frequency-domain detection algorithms Suitable for criterion is proposed based on the structural characteristics of LTE TDD PRACH format4, PRACH signal launch model and key features of Zadoff-Chu sequence. Under the program in the detection of user testing, uplink synchronization estimate and analysis of the coverage area, the simulation results and conclusions are drawn finally. The simulation results show that the algorithm is low computational complexity, and can be carried out at the same time for multiuser detection and synchronization estimate compared to traditional time-domain matching method.
Keywords :
frequency estimation; signal detection; time division multiplexing; LTE TDD system; PRACH signal launch model; Zadoff-Chu sequence; frequency domain detection; random access algorithm; time division duplexing; Analytical models; Computational complexity; Computational modeling; Detection algorithms; Frequency domain analysis; Frequency synchronization; Multiuser detection; Signal processing; Testing; Time domain analysis;
Conference_Titel :
Semantics, Knowledge and Grid, 2009. SKG 2009. Fifth International Conference on
Conference_Location :
Zhuhai
Print_ISBN :
978-0-7695-3810-5
DOI :
10.1109/SKG.2009.95
