Spacetime coded eigenbeamforming for downlink frequency-selective correlated fading channels     

李勇朝  廖桂生  仝文宁 《上海大学学报(英文版)》2006,(6)

1 Introduction Space-ti me coding (STC)[1-4]is an emerging tech-nique in communications . Multi-input multi-output(MIMO) signals are encoded in both spatial and tem-poral domains .As a result ,diversity and coding gainsare achieved . Most works to date on this subject arebased on two fundamental assumptions . One is thatthe transmitter does not knowthe channel state infor-mation (CSI) ,i.e.,openloop .The otheris that fad-ing from each base station antenna to any mobile an-tenna is indepen…  相似文献   

浅谈研究生培养的科研驱动与就业驱动     

秦薇敏  赵小文  廖桂生 《教育教学论坛》2019,(31):130-131

分析了硕士研究生阶段从事科研工作与他们毕业找工作时能力需求之间的关系,也就是研究生培养的科研与就业之间的关系,这对关系有时存在矛盾。文章揭示了这个矛盾的起源、发展、结果。并给出了解决这种矛盾的建议和方法,即转被动科研为主动科研,平衡科研工作和找工作需求的矛盾。  相似文献   

下行频率选择性相关衰落信道下的空时特征波束编码     

李勇朝  廖桂生  仝文宁 《上海大学学报(英文版)》2006,10(6):500-505

1 Introduction Space-ti me coding (STC)[1-4]is an emerging tech-nique in communications . Multi-input multi-output(MIMO) signals are encoded in both spatial and tem-poral domains .As a result ,diversity and coding gainsare achieved . Most works to date on this subject arebased on two fundamental assumptions . One is thatthe transmitter does not knowthe channel state infor-mation (CSI) ,i.e.,openloop .The otheris that fad-ing from each base station antenna to any mobile an-tenna is indepen…  相似文献   

浅谈屋面防水渗漏的补救施工技术     

廖桂生 《现代企业文化》2010,(24)

屋面的渗漏是现在建筑施工中常见的质量问题.文章结合实践经验,探讨了卷材防水和涂膜防水渗漏的两种屋面渗漏的补救施工技术.  相似文献