连续可变斜率增量调制的语音编码可以在高误码率的情况下正常工作。
CVSD (Continuous Variable Slope Delta Modulation) voice coding enables.
数码数据串按照误码探测和改正法则进行编码。
The digital data string is encoded with error detection and correction algorithms.
采用SP交织算法、纠错编码,给出了一种基于图像的抗突发误码的大容量数据嵌入隐秘传输方法。
By using SP algorithm and error correction code technology, a combating burst error and large capacity data hiding method for secret transmission was proposed based on images.
分析了其特性,包括编码效率、误码特性、功率谱、帧同步一次通过捕获特性等。
Its properties are analyzed, such as code efficiency, error Bit rate, power spectrum, the acquisition probability of the first frame marker.
水印在嵌入前经过卷积编码和交织处理,以提高其抗误码能力。
The watermark is processed by convolutional encoding and interleaving before embedding, in order to improve the ability for overcoming error bit rate.
本文对图象线性预测编码的误码问题进行了系统的分析。
This paper systematically analysis the problem of errors of linear predictive coding.
讨论了在各种编码方案下空间路径分集接收机的误码性能。
The performance of a space-path diversity receiver in various coding schemes is illustrated.
与传统的JPEG标准相比,JPEG2000标准采用了离散小波变换、内嵌编码等技术,从而具有了渐进传输、感兴趣区域压缩、抗误码等新特性。
Compared with the JPEG standard, JPEG2000 standard adopts some different compress technique, such as the Discrete Wavelet Transform, Embedded Coding and so on.
我们提出的方法引入了误差控制编码以减少误码,且实现了密文的盲提取。
We used the error control coding to reduce the error rate and a blind extraction was also achieved.
最后对不同编码方法在不同信道环境下做了误码率性能的比较分析。
At last, the code error rate performances in different coding method and different channel environment are analyzed and compared.
本文首先对循环预编码矩阵带来的噪声半混合进行了分析,并进一步提出了噪声全混合的预编码矩阵,分析了其误码率。
This paper analyses half hybrid noise of the circulant pre-coding matrix, then proposes full hybrid noise pre-coding matrix and discusses its bit error rate.
该方案能够克服LDPC码的误码平层,并且比BCH码级联方法有更高的灵活性以及更大的编码增益。
The scheme can solve the flat bed of error codes of the LDPC code and has higher flexibility and greater encoding gain than the cascaded methods of BCH code.
该方法是在权衡考虑影响视频主观质量多种因素的基础上,并综合了传输、鲁棒性编码和解码端错误隐藏等技术的抗误码方法。
With weighting the factors of video subjective quality, it integrates the technology of transmission, robust coding and error resilience of the decoder.
为抵抗水声信道的传输差错,提出了一种具有较高抗误码能力的水下图像高效编码算法。
An efficient and error resilient underwater image coding algorithm is presented to resist the transmission errors of the underwater acoustic channels.
实验证明,选择交织bch编码能有效地降低误码率,从而提高系统的可靠性。
At last, make some experiments, which prove the interleaved BCH code can reduce the error-correction effectively.
针对在较高误码率条件下JPEG2000图像传输质量急剧下降的缺陷,引入RS编码进行差错控制。
The quality of JPEG2000 image is seriously degraded when the bit error rate becomes rather high, so RS coding is added in the system for error control.
仿真结果也表明,这种方法能在比特误码率和码长之间取得一个较好的平衡,而且,编码图像能得到很好的抗噪声性能。
The simulation results also show that the method can get better balance between bit error rate and code length, and the image can get better anti-noise property.
由于无线信道的时变、高误码等特性,码率可变的RCPT码是比较理想的信道编码方式。
For the characteristics of wireless channel such as time-variety and high BER, the rate adjustable RCPT code is good for channel coding.
相对于以往的标准,H . 264标准拥有更高的编码效率,更宽的码率范围,更好的图像质量,更强的网络友好性和抗误码能力。
Compared to earlier standards, The H. 264 standard has a higher coding efficiency, a wider range of bit rate, better image quality, more network-friendly and anti-error capacity.
如果通信系统的通信速率在信道容量之内,那么我们可以设计信道编码使得通信的误码率无限接近于零。
If information rate vector is kept within the capacity region, then error probability of message delivery can be taken arbitrarily close to zero.
以高斯噪声信道和电力线信道为例,用本仿真系统分别计算出了无差错控制编码和有差错控制编码情况下误码率与信噪比的关系。
In Gaussian noise channel and power line channel, this emulational system calculate out relationship between bit error rates and signal to noise ratios.
视频信号在基于运动补偿预测的混合编码后,在不可靠信道中传输时会遇到严重的误码传播问题。
When hybrid coded video with motion compensated prediction (MCP) is transmitted over unreliable channels there exists the annoying problem of error propagation.
计算机仿真结果表明,RS编码和交织技术非常适合空间光通信信道,能大大降低系统的误码率。
The results of simulation show that RS coding and interleaving are fit for the channel of space laser communication, and can largely decrease bit error rate(BER).
本文给出了群变换方法构成的BCH编码在超宽带通信系统中的误码率仿真结果。
In this paper, we give the simulation results of bit error rate based on group counterchange method for BCH codes in UWB communication system in the condition of AWGN channel.
此外,新算法还提高了输出码流的抗误码性能和编码器流控的精确程度。
In addition, the new method improves the robustness of video bit stream against channel errors and makes the rate controlling operation of video encoders more accurate.
通过在加性高斯白噪声(AGWN)信道中的模拟仿真,其结果说明了此系统的优越性,并通过卷积编码,进一步降低了系统的误码率。
We simulated the system in the Additive Gaussian White Noise (AGWN) channel, proved the superiority of this system, and used the convolutional codes to reduce the bit error rate further.
结果表明:如果两系统使用相同码长的光地址码,则经过纠错的编码系统同未经过纠错的编码系统相比,其误码率有了明显的改善;
The results show that the performance of BER of coded system has a large improvement versus uncoded one when the two systems have same code length;
对码率2 / 3格形编码的8DPSKOFDM在时间色散信道中的误码率性能进行了分析和模拟,讨论了不同正交载波数情况下格形编码的设计。
The BER performance of rate 2/3 trellis coded 8DPSK OFDM over time dispersive channels is simulated. The design of trellis codes at different carriers numbers of OFDM is discussed.
最后,VCP通过了功能验证和FPGA仿真验证,并进行了误码率和速率的性能分析,它完全可以满足3g标准中对于语音编码的要求。
In the end, VCP has been passed the functional verification and FPGA emulation. The BER performance and code rates is perfect satisfied the Voice-Coding demand in 3g standard.
最后,VCP通过了功能验证和FPGA仿真验证,并进行了误码率和速率的性能分析,它完全可以满足3g标准中对于语音编码的要求。
In the end, VCP has been passed the functional verification and FPGA emulation. The BER performance and code rates is perfect satisfied the Voice-Coding demand in 3g standard.
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