diversity gain

The novel cooperative communication scenario takes both the direct link and relay link of secondary user into consideration for data transmission. Then the receiver of secondary user merges the signals from the two links to obtain diversity gain and improve system performance.

新的协作通信场景是指同时利用次级用户的直接链路和中继链路来协同传输数据，次级用户的接收端通过对两条链路的信号进行合并处理，从而获得分集增益，提升系统的性能。

This invention can effectively obtain higher diversity gain.

本发明可以有效的获得更高的分集增益.

Multi-receive antennas can also provide the diversity gain for LLR information and iterative extrinsic information.

多接收天线可以对判决似然比和迭代译码的外部信息提供分集增益,从而进一步提高系统性能.

Keeping full diversity order gain, the design can achieve 0.5 transmission rate.

该方案保证系统获得满分集度增益情况下, 实现码率为0.5的传送指标.

Over independent Rayleigh fading channels, this scheme can achieve the maximum diversity gain receive antennas.

在独立瑞利衰落信道情况下, 能够实现满分集增益.

Its main idea is by increasing the relay link to form a virtual MIMO, so as to achieve distributed transmission and the diversity gain.

其主要思想就是通过增加中继链路以形成虚拟MIMO，从而达到分布式传输，来获得分集增益。

Space-Time coding is a coding technique to achieve the diversity gain of multiple antennas system.

时空 编码是一种可以从多重天线系统中得到分集增益的编码技术.

Therefore a diversity gain can be obtained in a broadband fading channel.

因此，在宽带衰落信道中可获得分集增益。