UC知道哪位高手帮忙翻译一下这些英语 急着用
来源：百度知道 编辑：UC知道 时间：2024/06/06 04:19:14
Non-contiguous orthogonal frequency division multiplexing is a viable data transmission candidate for dynamic spectrum access networks employing a spectrum pooling paradigm.In NC-ofdm systems, the subcarriers in the vicinity of the incumbent user transmissions are deactivated in order to avoid interference. Being a variant of OFDM, NC-OFDMalso potentially suffers from a high peak-to-average power ratio,where the PAPR is defined as the ratio of the maximum instantaneous power and the average power of the signal.
Several studies have been carried out to analyze the statistical properties of PAPR for contigious OFDM signals [4,5]. These analyses inherently assume the input symbols being identically and indepedently distributed and model the baseband OFDM signal as complex Gaussian process to derive the closed-form approximations for the distribution of PAPR for OFDM signals. When NC-OFDM systems are employed in DSA networks, large number subcarriers might be deactivated in order t
Several studies have been carried out to analyze the statistical properties of PAPR for contigious OFDM signals [4,5]. These analyses inherently assume the input symbols being identically and indepedently distributed and model the baseband OFDM signal as complex Gaussian process to derive the closed-form approximations for the distribution of PAPR for OFDM signals. When NC-OFDM systems are employed in DSA networks, large number subcarriers might be deactivated in order t
非连续正交频分复用是一种可行的数据传输候选人动态频谱接入网络采用了频谱池paradigm.In数控- OFDM系统的子载波附近的现任用户传输停用，以避免干扰。作为一个变量的OFDM ，数控OFDMalso可能患有高峰值平均功率比，那里的峰均比的定义是比率最高瞬时功率和平均功率的信号。
几项研究已经进行了分析，统计特性的OFDM峰均比的contigious信号[ 4,5 ] 。本来以为这些分析的输入符号相同和indepedently正在分发和模拟基带OFDM信号的复杂高斯过程中获取的封闭形式近似分配的OFDM信号PAPR的。当数控- OFDM系统从事造影网络，大量子可能被停用，以避免发生任何干扰现任用户。结果，输入符号不再是相同的，独立分布的定义和分配PAPR的推导毗连OFDM信号根据这些假设是无效的PAPR的数控OFDM信号根据这些假设是无效的PAPR的数控- OFDM信号。
传统的OFDM系统采用了连续的子载波，而数控- OFDM系统中采用非相邻块子在无人居住的部分频谱。因此，减少PAPR的技术提出了传统OFDM系统需要修改NCOFDM传输。此外，设计要求降低PAPR的技术将不同于传统的OFDM系统。在本文中，我们目前的统计分析的PAPR的数控- OFDM信号偏离常规的OFDM峰均比属性。此外，我们详细的设计要求，减少PAPR的技术，数控- OFDM信号。
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