进一步考虑在存在多用户干扰条件下，该系统性能随用户数的增加而下降。
So the scheme employing PPM is preferred and we further find when MUI(Multi User Interference) is considered the performance degrades when the number of users increases.
在系统中存在多用户干扰及接收机散粒噪声的情况下，推导出该系统误码率上限，并对该系统特性与无光硬件限幅器的光PPM- CDMA通信系统特性作了比较。
The performance of the system is evaluated when considering the effects of both multi user interference and photo detector shot noise. An upper bound on the bit error rate is derived.
在DS - CD ma系统中，联合译码的迭代多用户检测是克服多址干扰增加系统容量的有效方法。
It has been proved that iterative multiuser detection with decoding is a very effective way to increase system capacity in DS-CDMA systems.
该智能天线在每个阵元输出带有时域均衡器，可以在多径环境下有效消除多径干扰和多用户干扰，提高信噪比。
Tore duce effective the multipath disturbance and multi-user interference and improve the SNR, time-domain equalizer is employed at the output of each array element of smart antenna.
在时间域处理采用2步并行干扰对消的多用户检测算法。
Also we compared the performance of decorrelator, LMMSE and a 2 stage PIC (parallel Interference Canceller) multiuser detector, which form the temporal processing of the receiver.
在CDMA系统中，引入多用户检测、功率控制和天线阵列波束形成技术，可以有效地抑制干扰，提高系统容量。
The multiuser detection, power control and smart antenna technique can be used as power methods to suppress the interference, hence increasing the capacity of CDMA systems.
改进的多用户检测算法将子空间算法和约束优化算法结合起来，在强干扰信道中能有效提高系统性能。
This algorithm joint the constrained optimization algorithm and subspace algorithm, can improve the system performance in strong interfere environment.
分析结果表明，在系统中引入多用户检测技术可以抑制多用户干扰带来的影响，有效提高系统用户容量。
The result of simulation demonstrates that the introduction of the technology of multi-user detection makes address code used effectively.
在CD MA移动通信系统中，多址接入干扰可以通过多用户检测技术来消除，而分集接收可以减小信道衰落的影响。
In CDMA mobile communication systems, multiple access interference can be cancelled by multiuser detection technique. The degradation by channel fading can be reduced by diversity reception.
本文介绍了多址干扰在CDMA系统中的成因，并提出通过多用户检测技术可抑制多址干扰(MAI)，从而提高CD MA系统的容量和性能。
This paper introduces cause of formation of MAI in CDMA systems, and points out that Multi-user Detection (MUD) technology can improve capability and performance of CDMA through suppressing MAI.
本文介绍了多址干扰在CDMA系统中的成因，并提出通过多用户检测技术可抑制多址干扰(MAI)，从而提高CD MA系统的容量和性能。
This paper introduces cause of formation of MAI in CDMA systems, and points out that Multi-user Detection (MUD) technology can improve capability and performance of CDMA through suppressing MAI.
应用推荐