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:
Aug. 24, 2010
Filed:
Sep. 04, 2008
Lai-huei Wang, Hsinchu, TW;
Pang-an Ting, Hsinchu, TW;
Jia-hao Wu, Hsinchu, TW;
Jiun-yo Lai, Hsinchu, TW;
Lai-Huei Wang, Hsinchu, TW;
Pang-An Ting, Hsinchu, TW;
Jia-Hao Wu, Hsinchu, TW;
Jiun-Yo Lai, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A method, and device implementing the method, for adaptively allocating pilot signals in a wireless communication system. The method includes receiving channel data, including channel length (L) data, inter-carrier interference power (P) data, coherence time (CT) data, and a number of subcarriers (N). The method further includes selecting, when L is greater than a first channel length threshold (L), a first number of pilot signals between a minimum value of L and a maximum number of pilot signals N, wherein the first number of pilot signals Nare equally spaced in time according to the CT data, and equally spaced in frequency. Further, the method includes selecting, when L is less than Land Pis less than a power threshold (P), a second number of pilot signals such that the second number of pilot signals is between the minimum value of L and N, wherein the second number of pilot signals are equally spaced in time according to the CT data, and equally spaced in frequency. Finally, the method includes selecting, when L is less than Land Pis greater than P, a third number of pilot signals such that the third number of pilot signals is equal to n times L (nL), wherein n is an integer, the third number of pilot signals being equally spaced in time according to the CT data, and allocated according to a cluster(n) clustered pilot scheme with a cluster size equal to n, the n-sized clusters being clustered in frequency.