Title :
User number detection based on rotational invariance techniques in OFDMA system
Author :
Du, Ruiyan ; Wang, Jinkuan ; Shan, Liqun ; Xin, Fengming
Author_Institution :
Sch. of Inf. Sci. & Eng., Northeastern Univ., Shenyang, China
Abstract :
A robust user number detection method for OFDMA uplink is proposed in this paper. The presented method makes using of the special periodicity of the received signals in one OFDMA block to form a new matrix. Via the rotational invariance techniques, the number of involved users can be estimated. Simulation results demonstrate the effectiveness of the proposed algorithm.
Keywords :
OFDM modulation; estimation theory; telecommunication standards; OFDMA system; OFDMA uplink; rotational invariance techniques; user number detection; Communication standards; Communications technology; Covariance matrix; Frequency conversion; Information science; Long Term Evolution; OFDM; Petroleum; Robustness; Signal processing algorithms; orthogonal frequency division multiplexing access (OFDMA); rotational invariance techniques; user number detection;
Conference_Titel :
Computer Design and Applications (ICCDA), 2010 International Conference on
Conference_Location :
Qinhuangdao
Print_ISBN :
978-1-4244-7164-5
Electronic_ISBN :
978-1-4244-7164-5
DOI :
10.1109/ICCDA.2010.5540882
