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- Title
窄带物联网信道接收端检测算法的并行化实现.
- Authors
张新; 王瑜; 山蕊; 王昱; 吴月
- Abstract
In allusion to the problems from detection and arrival time in narrow band Internet of Things(NB -IoT)physical random access channel(PRACH),such as algorithmic large amount of data calculation and time-consuming,a parallelization hardware implementation scheme based on reconfigurable array processor is proposed by analyzing the parallelism and data correlation of receiver detection algorithms. When the preamble symbols generated by the high-level configuration parameters and the received symbols processed by the previous channel have the maximum correlation,the algorithm uses the arrival time and the residual subcarrier offset as estimation indexes,and uses multiple light-core processor element(PE) in a pipelined manner to realize parallel computation to improve the operation efficiency. The experimental results show that the mapping of the algorithm is realized by using 6 PE's simultaneous scheduling,which runs for 35 985 cycles,and its performance is 36. 18% higher than that of a single PE. Compared with the running time of the algorithm on Matlab,the design scheme reduces 173. 09 times,which effectively improves the operation efficiency of the receiving end detection algorithm.
- Subjects
ARRAY processors; INTERNET of things; TIME management; ALLUSIONS; ALGORITHMS; COMPUTER scheduling
- Publication
Telecommunication Engineering, 2020, Vol 60, Issue 1, p87
- ISSN
1001-893X
- Publication type
Article
- DOI
10.3969/j.issn.1001-893x.2020.01.015