发明名称 |
Method of transmitting pilot bits in a wireless communication system |
摘要 |
A method of allocating pilot bits in a wireless communication system using a multiple carrier modulation (MCM) is disclosed. The method includes allocating a plurality of precoded data symbols precoded by a precoding matrix module and a plurality of non-precoded pilot bits to a plurality of subcarriers, and transmitting the allocated precoded data symbols and the allocated non-precoded pilot bits. |
申请公布号 |
US9014165(B2) |
申请公布日期 |
2015.04.21 |
申请号 |
US200611917419 |
申请日期 |
2006.06.13 |
申请人 |
LG Electronics Inc. |
发明人 |
Kim Hak Seong;Kim Bong Hoe;Roh Dong Wook;Ahn Joon Kui;Seo Dong Youn;Lee Jung Hoon |
分类号 |
H04L27/00;H04L5/00;H04L25/02;H04L25/03;H04W48/08 |
主分类号 |
H04L27/00 |
代理机构 |
Lee, Hong, Degerman, Kang & Waimey |
代理人 |
Lee, Hong, Degerman, Kang & Waimey |
主权项 |
1. A method of transmitting pilot signals at a terminal in a wireless communication system using an Orthogonal Frequency Division Multiple Access (OFDMA) scheme, the method comprising:
applying transform precoding only to a plurality of data symbols by a transform precoder of the terminal; transmitting, at a first point of time, a first non-precoded plurality of pilot signals, wherein the precoded plurality of data symbols are not transmitted at the first point of time, and wherein the first non-precoded plurality of pilot signals are allocated by a symbol-to-subcarrier mapping module to reserved locations where the precoded plurality of data symbols are not allocated; transmitting, at a second point of time, the precoded plurality of data symbols without the first non-precoded plurality of pilot signals, wherein a receiver performs a channel estimation for the precoded plurality of data symbols based on the first non-precoded plurality of pilot signals that are not transmitted at the second point of time; and transmitting, at a third point of time, both the precoded plurality of data symbols and a second non-precoded plurality of pilot signals, wherein both the precoded plurality of data symbols and the second non-precoded plurality of pilot signals are allocated by the symbol-to-subcarrier mapping module, and wherein the second non-precoded plurality of pilot signals are allocated to locations that are not reserved in consideration of locations of the precoded plurality of data symbols. |
地址 |
Seoul KR |