The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2014
Filed:
Nov. 02, 2010
Xiqi Gao, Nanjing, CN;
Bin Jiang, Nanjing, CN;
Xiaohu You, Nanjing, CN;
Teer BA, Nanjing, CN;
Shi Jin, Nanjing, CN;
Jue Wang, Nanjing, CN;
Dongming Wang, Nanjing, CN;
Yanxiang Jiang, Nanjing, CN;
Xiqi Gao, Nanjing, CN;
Bin Jiang, Nanjing, CN;
Xiaohu You, Nanjing, CN;
Teer Ba, Nanjing, CN;
Shi Jin, Nanjing, CN;
Jue Wang, Nanjing, CN;
Dongming Wang, Nanjing, CN;
Yanxiang Jiang, Nanjing, CN;
Southeast University, , CN;
Abstract
A pilot and channel estimation method for SDMA MIMO transmission downlink is provided in the present invention, and the method provides possibility for saving the orthogonal pilot resources; the pilot signals of different users in the transmitting antenna domain can occupy the same time-frequency resources, and thereby the pilot overhead of system resources can be reduced greatly; the method includes: for the MIMO transmission downlink that employs pre-coding for SDMA, taking the quantity of orthogonal pilot resources occupied by the users in the pre-coding domain as the number of data streams that can be transmitted or the number of spatial dimensions occupied first, at the transmitting end of the base station; then, performing SDMA transmission pre-coding for the orthogonal pilots in the pre-coding domain in the same way as the data signals, to obtain the pilot signals of the users in the transmitting antenna domain; wherein, the pilots of the users in the pre-coding domain can be orthogonal in the frequency domain or code domain, and the pilots of different users in the pre-coding domain can be identical or not identical to each other; the pilot signals of different users in the transmitting antenna domain can occupy the same time-frequency resources.