| 1. | In awgn channel , we introduce a novel iterative multiple - tone interference suppression scheme in the multiple - tone interference environment
针对加性白高斯噪声信道中的发射信号,提出了迭代多音干扰抑制方法。 |
| 2. | In awgn ( additive white gaussian noise ) channel , we introduce a new single - tone interference suppression scheme in the single - tone interference environment
针对加性白高斯噪声信道中的发射信号,提出了利用单音信号频域特性的单音干扰抑制方法。 |
| 3. | Subsequently the channel was modeled for three types namely additive white gaussian noise , flat fading and frequency selective fading . lastly , the receiver was studied
接下来信道建模成三种不同的类型，即加性高斯白噪声信道、平坦衰落信道和频率选择性衰落信道。 |
| 4. | In additive white gaussian noise ( awgn ) channel , we introduce a method for synchronization of symbol timing and frequency for two - dimensional spread spectrum system without prior knowledge of spread spectrum matrix
摘要针对加性白高斯噪声信道，考虑未知二维扩频矩阵的条件下，提出了一种二维扩频系统的时频同步方法。 |
| 5. | Convolutional coding is a coding scheme often employed in deep space communications and recently in digital wireless communications . it offers an alternative to block codes for transmission over a noisy channel
卷积码被运用于卫星通信和无线通信系统中，它提供了一种不同于分组码的在噪声信道下传输信息的一种编码方案。 |
| 6. | The problems of carrier frequency offset estimation under the condition of the agwn channel , frequency flat - fading channel and frequency selective - fading channel are studied in detail respectively
本文仔细研究了在高斯白噪声信道下、频率平坦衰落信道下和频率选择性衰落信道下高精度估计信号载频偏差的问题，并对相应算法提出了一些改进办法。 |
| 7. | We study holevo capacity of a single mode squeezed channel , derive the main formulus for computing the capacity . the result suggests that in many case the capacity is achived when the input is a squeezed state
对热噪声信道，表明了容量在输入信号为热噪声信号时达到，压缩态无助于达到信道容量；而对于压缩信道，容量一般在输入压缩态时达到。 |
| 8. | Deriving formulas of map algorithm and its modified algorithms in the log domain ( including max - log - map and log - map ) , and simulating the performances of turbo codes over additive white gaussian noise ( awgn ) . 2
详细推导了map译码算法，以及map算法在对数域中的修正算法( max - log - map和log - map算法) ，并对turbo码在高斯白噪声信道下的性能进行了仿真分析。 |
| 9. | First , the traditional speech detection method based on short - time energy is discussed , including its principle and implementation . then it is used for the jumping - off point detection of speech signals transmitted by awgn channel . simulation results are provided
包括该方法的原理、实现，并将其应用于加性高斯白噪声信道干扰下的语音信号起点检测实验，给出了实验的统计结果。 |
| 10. | The simulation result shows that : the performance of the proposed scheme is improved with comparison to pccc and sccc on both awgn channel and the rayleigh fading channel . in awgn channel , it is about same if the snr is low , if the snr is high , the improvement is 0 . 2 ~ 0 . 5db
结果表明：本方案的误码率性能与并行级联码和串性行级联码相比，在高斯白噪声信道上，低信噪比时几乎相同，高信噪比时有0 . 2 0 . 5db的改善。 |
