| 1. | Constant modulus algorithm ( cma ) , which was used in blind equalization , is introduced in this paper
文中引入了用于盲信号均衡的恒模算法( cma : constantmodulusalgorithm ) 。 |
| 2. | In the constant modulus algorithm , the multistage cm ( constant modulus ) array and the analytical constant modulus algorithm were analyzed
在常模算法中又选取了多级常模阵和解析常模算法这两种截然不同的算法。 |
| 3. | To signaling with no constant modulus ( such as 16qam ) , the switch algorithm is able to achieve less residual mean square error than that of cma
该切换算法，对于非常数模信号(如16qam等) ，可以获得比常数模算法更小的剩余均方误差。 |
| 4. | Furthermore , satisfactory output signal - to - interference - and - noise - ratio ( sink ) is achieved . 3 when there exits several constant modulus signals , the cma could not adaptively distinguished different users
3当多个恒模用户同时存在时，恒模算法不能自适应地辨别出不同的用户。 |
| 5. | The mathematics " model of bussgang be for uwac is discussed . and in our research , the constant modulus algorithm ( cma ) is emphasized , which is a special example of the bussgang type
?给出了bussgang类水声信道盲均衡算法的数学模型，重点分析了bussgang算法的一个特例? ?常数模算法的性能。 |
| 6. | In the thesis , three kinds of blind beamforming algorithms were introduced , which are the cumulant - bascd blind beamforming , the array structure - based blind beamforming , and the constant modulus algorithm
论文中首先详细介绍了三类盲波束形成算法：基于累积量的盲波束形成算法、基于基阵结构的盲波束形成算法和常模算法。 |
| 7. | In chapter 5 , constant modulus algorithm ( cma ) is a well - known blind adaptive beamforming method as it requires no pre - knowledge about the signal except that the transmitted signal waveform has a constant envelope
在实际的无线环境中，随着用户的激增，通信环境日趋恶劣，这就要求波束形成算法在强干扰的环境中，仍然能够快速而准确的收敛于期望信号。 |
| 8. | Comparison study between the constant modulus decision feedback equalizer ( dfe ) and several others is made on combating the frequency selective fading of uwac , and their tracking performance to time varying is also investigated
?针对水声信道的频率选择性衰落，对比研究了常数模判决反馈盲均衡算法与其它几种盲均衡算法的性能。针对水声信道的时变特性，研究了该算法的跟踪摘要性能。 |
| 9. | The two calibration projects are both based on de - spreading the reference signal . because they require a prior knowledge of the auxiliary signal , such as pn spread code , doa , constant modulus and so on , the fast and robust convergence can be ensured , and the multiple - access interference ( mai ) can be eliminated
由于利用了辅助信号源的先验知识，如扩频码、辅助信号的doa 、比特信息及恒模特性等，有源校正技术不仅克服了自校正技术收敛慢的弱点，还消除了不利于校正的多径影响。 |
| 10. | The multistage constant modulus ( cm ) array is a cascade adaptive beamforming system that can recover several narrowband co - channel signals without training . the main idea of the smi - cma is to use smi to determine the initial weight for cma operation . the method can come up with the desire signal in despite of the interfering signal is stronger than the desire signal
基于以上考虑，我们提出了基于smi - cma联合自适应方法，该算法可以分离多个同信道信源，由smi算法决定cma算法的初始权向量，在干扰信号较强时，仍有稳定的sinr输出，具有较快的收敛速度。 |
