生疏的拼音
专利名称：Quasi-orthogonal space-time codes
人间滋味发明人：Constantinos B Papadias,Naresh SharmaABC是词语
猫的作文三年级虚电申请号：US10099515
申请日：20020315
公开号：US07184488B2
公开日：
赣州旅游
20070227
专利内容由知识产权出版社提供
专利附图：
摘要：A method and apparatus for reducing the bit rate of multi-input systems that employ space-time coding by displacing in signal space the derivatives of a symbol. A mapped particular symbol is
space-time coded to generate transmit-quences having a pha-shifted version of the particular symbol, the pha-shifted version and the
particular symbol differing in pha by an amount other than by 90°, 180°, and 270°. In one embodiment, the particular symbol reprents a point in a first symbol constellation and the derivatives of the particular symbol reprent points in a displaced symbol constellation. In another embodiment, the particular symbol and another symbol are space-time coded to form the transmit-quences. The derivatives of the particular symbol reprent points in a first symbol constellation and derivatives of the other symbol reprent points of a cond symbol constellation. The two constellations are displaced versions of each other. The displacement can be a pha shift and/or a change in amplitude. Illustratively, the two symbols are ones who received versions interfere with each other after the two transmit-quences are space-time decoded at the receiver. Displacing the derivatives of symbols reduces the bit error rate and thus increas the capacity of the system. Particularly, such a displacement increas the distance between symbols of a constellation who points reprent the combination of the derivatives of two the symbols.以史明志
申请人：Constantinos B Papadias,Naresh Sharma
地址：Westfield NJ US,Budd Lake NJ US
钢筋单位
国籍：US,US
代理人：Irena Rappaport
更多信息请下载全文后查看
