OFDM(正交频分复用)技术实际上是MCM(Multi-Carrier Modulation，多载波调制)的一种。其主要思想是，将信道分成若干正交子信道，将高速数据信号转换成并行的低速子数据流，调制到在每个子信道上进行传输。正交信号可以通过在接收端采用相关技术来分开，这样可以减少子信道之间的相互干扰(ICI)。每个子信道上的信号带宽小于信道的相关带宽，因此每个子信道上的可以看成平坦性衰落，从而可以消除符号间干扰。而且由于每个子信道的带宽仅仅是原信道带宽的一小部分，信道均衡变得相对容
标签： Multi-Carrier Modulation OFDM MCM
上传时间： 2017-09-03
上传用户：skfreeman
Cuncurrent java development. Threads and synchronization
标签： synchronization development Cuncurrent Threads
上传时间： 2013-12-21
上传用户：mikesering
Tutorial of use Threads in Delphi.
标签： Tutorial Threads Delphi use
上传时间： 2017-09-18
上传用户：ecooo
nice document about the fast manipulation of multi-dimensional arrays in matlab,with some examples to avoid loops and using indices
标签： multi-dimensional manipulation document examples
上传时间： 2014-01-23
上传用户：edisonfather
Lukas Kanade Multi resolution program in matlab language.
标签： resolution language program Kanade
上传时间： 2017-09-25
上传用户：athjac
Example code in Delphi to use MessageWait method to synchronize threads. Example code include delphi project files.
标签： Example code MessageWait synchronize
上传时间： 2013-12-12
上传用户：chongcongying
introduction in java threads class
标签： introduction threads class java
上传时间： 2013-12-23
上传用户：fandeshun
Multi-carrier modulation‚ Orthogonal Frequency Division Multi- plexing (OFDM) particularly‚ has been successfully applied to a wide variety of digital communications applications over the past several years. Although OFDM has been chosen as the physical layer standard for a diversity of important systems‚ the theory‚ algorithms‚ and implementation techniques remain subjects of current interest. This is clear from the high volume of papers appearing in technical journals and conferences.
标签： COMMUNICATIONS MULTI-CARRIER DIGITAL
上传时间： 2020-05-31
上传用户：shancjb
Since the principle of multi-carrier code division multiple access (MC-CDMA) was simultaneously proposed by Khaled Fazel et al. and Nathan Yee et al. at the IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) in the year 1993, multi-carrier spread spectrum (MC-SS) has rapidly become one of the most wide spread independent research topics on the field of mobile radio communications. Therefore, the International Workshop on Multi-Carrier Spread Spectrum (MC-SS) was initiated in the year 1997. Multi-carrier and spread spectrum systems with their generic air interface and adaptive technologies are considered as potential candidates to fulfill the requirements of next generation mobile communications systems.
标签： Multi-Carrier Spectrum Spread 2007
上传时间： 2020-05-31
上传用户：shancjb
Notwithstanding its infancy, wireless mesh networking (WMN) is a hot and growing field. Wireless mesh networks began in the military, but have since become of great interest for commercial use in the last decade, both in local area networks and metropolitan area networks. The attractiveness of mesh networks comes from their ability to interconnect either mobile or fixed devices with radio interfaces, to share information dynamically, or simply to extend range through multi-hopping.
上传时间： 2020-05-31
上传用户：shancjb
