ID 原文 译文
10824 为了降低正交频分复用(orthogonal frequency division multiplexing,OFDM)系统中传统选择性映射(conventional selected mapping,CSLM)算法的计算复杂度,提高系统的频谱利用效率,提出了一种基于盲检测的低复杂度分块选择性映射(block selected mapping,BSLM)算法。 In order to reduce the orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) systems in traditional selective mapping (but these selected mapping, CSLM) algorithm computational complexity and improve the system spectrum efficiency, this paper proposes a low complexity based on blind detection block selective mapping (block selected mapping, BSLM) algorithm.
10825 发送端利用逆快速傅里叶反变换(inverse fast fourier transform,IFFT)性质仅需少量低维IFFT运算即可获得较多的备选序列,接收端采用低复杂度的盲检测方式。 The sender using the inverse fast Fourier transformation (inverse fast Fourier transform, IFFT) nature only a small amount of low dimensional IFFT operation can obtain more alternative sequence, the receiver USES the blind detection method of low complexity.
10826 仿真分析了所提算法的峰均功率比(peak to average power ratio,PAPR)、立方度量(cubic metric,CM)和误比特率(bit error rate,BER)性能。 ‭The simulation analysis of the proposed algorithm are both peak power ratio (peak to average power thewire, PAPR), cubic measurement (cubic metric, CM) and bit error rate (bit error rate and BER) performance.
10827 结果表明,所提算法不仅明显降低了计算复杂度,而且有效抑制了OFDM信号的PAPR和CM,获得与已知边带信息的CSLM算法相近的BER性能。 ‭The results show that the proposed algorithm not only significantly reduces the computational complexity, and effectively restrain the PAPR of OFDM signal and CM, and the known sideband information CSLM algorithm of similar BER performance. ‭
10828 针对数传、测距一体化的调制方式高斯最小频移键控复合伪码测距（Gaussian minimum shift keying+pseudo-noise,GMSK+PN）信号的信噪比估计,提出了一种精度较高、复杂度较低的快速算法。 In digital modulation method, ranging integration Gaussian minimum frequency shift keying composite pseudo code ranging (Gaussian minimum shift keying + pseudo - noise, GMSK + PN) signal SNR estimation, this paper proposes a fast algorithm with high precision and low complexity.
10829 该算法采用层状结构分解的方式,将信号分解为若干信号单元,对每一个分解的信号单元进行功率分配计算或信噪比估计,最后快速准确地计算出整个信号的信噪比。 The algorithm with the method of layered structure decomposition, the signals are decomposed into a number of units, unit for each decomposed signal power distribution calculated or SNR estimation, the final rapidly and accurately calculate the SNR of the entire signal.
10830 在认知无线电中,能量检测法是次用户实现频谱检测的重要方法之一。 In cognitive radio, the energy spectrum detection test is time users achieve one of the important ways.
10831 其中,检测参数的设置尤为重要。 ‭Among them, the detection parameter setting is especially important.
10832 然而,当无线网络环境改变时,一些重要检测参数(如检测器门限)将会随之改变,因而及时准确地获取检测参数就显得十分必要。 ‭When the wireless network environment changes, however, some important parameters (such as detector threshold) will be changed, and thus to obtain timely and accurate testing parameter is very necessary.
10833 本文首先在理想高斯白噪声信道条件下推导了能量检测的最佳门限表达式。 ‭In this paper, first of all, in the ideal gaussian white noise channel is deduced under the condition of optimum threshold expressions of energy detection.