1) subcarrier grouping
子载波分群
1.
Combining subcarrier grouping with choosing appropriate system parameters, general OFDM system is converted into a set of group OFDM system, within which STF coding is considered.
其基本思路是 :应用子载波分群方法并选择合适的系统参数 ,将OFDM系统转化成分群OFDM (G OFDM ) ,对每个群分别进行空时频分组编码 (GSTFBC) ;在编码比特被重组和映射成GSTF分组编码前进行合理的比特交织 ,并按一定的规则分配给各个单群子载波进行酉星座旋转 (CR)预编码。
2) subcarrier grouping
分群子载波
3) subcarrier allocation
子载波分配
1.
An OFDMA subcarrier allocation algorithm based on estimated difference value
基于预期容量损失的OFDMA子载波分配算法
2.
In this paper,an optimal adaptive multiuser subcarrier allocation was proposed based on channel feedback characteristics.
针对于多用户多输入多输出-正交频分复用(MIMO-OFDM)下行传输,提出一种基于用户信道特征反馈自适应调整多用户子载波分配的优化算法。
3.
For the multiuser MIMO/OFDM systems,we proposed a low complexity,adaptive resource allocation scheme,which include adaptive subcarrier allocation,adaptive power allocation and adaptive beamforming.
针对多天线多用户环境下的正交频分复用(OFDM)系统,提出了一个低复杂度的自适应资源分配方案,包括自适应子载波分配、自适应功率分配以及自适应波束成形等。
4) sub-carrier allocation
子载波分配
1.
Knowing the channel characteristics of all the users at the base station,the sub-carrier allocation algorithm assigns subcarriers to the users in such a way that the total transmit power is mi.
介绍了一种OFDMA下行链路的实时动态子载波分配算法,算法根据各个子载波对各个用户的瞬时信道增益,在使系统总的发送功率最小的准则下,为各用户分配最优的子载波组。
2.
The algorithm, which involves adaptive sub-carrier allocation and bit loading with equally power allocation, adopts a grouping technique rather than the sub-carrier swapping.
算法使用分组代替迭代计算,摒弃复杂的子载波交换操作,以极低的复杂度实现了等功率下的自适应子载波分配和比特加载。
3.
The sub-carrier allocation problem for the downlink of multi-cell orthogonal frequency division multiple access system is studied.
本文研究了采用正交频分多址(OFDMA)系统下行链路的分布式子载波分配问题,综合考虑了物理层上的约束条件(用户的误比特率性能)和媒体接入层的约束条件(用户的最小速率需求),提出了一种两级分布式子载波分配方案,就是将子载波分配分成小区间子载波分配和小区内子载波分配两步,小区间子载波分配通过相邻小区的信息传递可以有效的降低OFDMA系统的主要干扰——小区间的同频干扰,在小区间子载波分配的基础上,小区内子载波分配充分考虑用户的业务需求,根据用户的优先级分配子载波。
5) Subcarriers-partition
子载波分割
6) Subcarrier-Diversity
子载波分集
补充资料：电力线载波保护复用载波机
电力线载波保护复用载波机
multi purpose PLC equipment for teleprotection system
d一onl一x一on zolbo boohu fuyong 20一boJ-电力线载波保护复用载波机(multi purposePLC equiPment for teleProteetion system)见电力线载波机。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条