CAJ | 학술논문

异步传输网络间通信信道组成复杂，对异步传输网络间通信信道的频谱的准确估计可以避免不占用多余的频带，能够实现高数据率通信。提出一种基于频域分块和脉冲响应的异步传输网络频谱估计算法。构建异步传输网络通信信道模型为缓慢时变、空变的相干多途信道，采用正交频率复用OFDM训练序列得到确定的起始帧概率分布，采用同步算法能有效减少系统子载波间的正交性抑制，得到系统函数的基本特征传递函数，实现对频域分块频谱估计。仿真结果表明，该算法能有效提高对频谱的估计精度，提高异步传输网络的通信性能，网络异步数据传输的吞吐量大幅提高。
이보전수망락간통신신도조성복잡，대이보전수망락간통신신도적빈보적준학고계가이피면불점용다여적빈대，능구실현고수거솔통신。제출일충기우빈역분괴화맥충향응적이보전수망락빈보고계산법。구건이보전수망락통신신도모형위완만시변、공변적상간다도신도，채용정교빈솔복용OFDM훈련서렬득도학정적기시정개솔분포，채용동보산법능유효감소계통자재파간적정교성억제，득도계통함수적기본특정전체함수，실현대빈역분괴빈보고계。방진결과표명，해산법능유효제고대빈보적고계정도，제고이보전수망락적통신성능，망락이보수거전수적탄토량대폭제고。
Asynchronous transmission network communication channel between a complex composition, the accurate estima?tion of frequency spectrum of asynchronous transmission between network communication channel can be avoided without occupying extra band, to achieve a high data rate communication. This paper presents an algorithm to estimate based on asynchronous transmission network spectrum frequency partition and impulse response. Coherent multi-path channel struc?ture of asynchronous transmission network communication channel model for slow time-varying and space varying, adopt?ing orthogonal frequency multiplexing OFDM training sequence to obtain the initial frame to determine the probability dis?tribution, using synchronous algorithm can effectively reduce the orthogonality between sub carrier suppression system, get the basic feature of the system transfer function of the realization of function, estimation of frequency domain division block spectrum. The simulation results show that the algorithm can effectively improve the estimate precision of the spectrum, to improve the communication performance of asynchronous transmission network, the network of asynchronous data transmis?sion throughput substantially increase.