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- Downlink OFDM system 下行OFDM系统
- OFDM system tends to damage the orthogonality for ICI. OFDM的频谱正交性容易受到ICI的影响被破坏.
- Carrier frequency offset is one of the key problems in OFDM system. 摘要载波频率偏移是OFDM系统实现的关键问题之一。
- A low complexity resource management scheme based on generalized processor sharing(GPS) scheduling for the downlink of OFDM systems is proposed. 针对OFDM系统的下行链路,提出了一种基于广义处理器共享(GPS)调度的低复杂度资源管理方案。
- In chapter 4, we concatenate space-time block coding with a delay processor and a signal mapper in OFDM system. 在第四章中，我们结合具有延迟处理器的篱栅编码架构与正交空时区块码应用于正交分频多工系统。
- The results show that TC OFDM system can provide 6dB coding gain at a BER of 10 -3 compared with no coding OFDM system. 结果表明 ,在比特误码率BER为 10 - 3时采用TC OFDM方案与未编码系统相比可以提供 6dB的编码增益。
- This paper also introduces the application of LDPC codes,especially its application in the STC- OFDM system. 文中还讨论了LDPC码的应用,主要是在STC-OFDM系统中的应用。
- The second chapter introduced OFDM system, including series-parallel conversion, DFT/IDFT conversion, cyclic prefix. 第二章介绍了OFDM系统与MIMO技术,包括OFDM系统的串并转换,DFT/IDFT转换,循环前缀等特性。
- One of the major drawbacks of the OFDM system is the high peak-to-average power ration (PAPR). 摘要正交频分复用(OFDM)系统的一个主要缺点是峰均功率比(PAPR)过高。
- By this way, no redundant signals are added, and the bandwidth efficiency of OFDM system is further increased. 由于采用这种方法无需加入冗馀信息，故进一步提高了系统的传输效率。
- From the OFDM system theory, we could know baseband OFDM signals often are realized by IFFT. 从OFDM系统原理可以知道，基带OFDM信号通常都是用IFFT来实现的。
- A training guided decision feedback equalization (DFE) method was proposed for OFDM system. 针对OFDM系统,提出了一种基于训练引导的判决反馈均衡算法。
- A new frequency offset and channel estimation joint algorithm for OFDM system is proposed. 摘要针对正交频分复用系统提出一种新的频偏与信道联合估计的算法。
- In this paper, we design a variable length FFT/IFFT architecture for OFDM system. 本文将解析低功率消耗的IFFT/FFT硬体设计，于OFDM系统的应用。
- According to the requirement of real-time control in adaptive OFDM system, a SNR blind estimation technique based on virtual carriers is proposed. 系统实时控制的要求,提出了一种基于虚载波的信噪比盲估计方法。
- In this thesis, basing on the FFT algorithm, a based-band OFDM system is analyzed, designed and simulated on a computer. 本文设计了一个基于FFT算法的OFDM系统，并在计算机上进行了仿真和分析。
- The influence of power line channel noises on the bit error ratio (BER) performance of the OFDM system is analyzed by simulation. 通过仿真,分析了低压电力线信道上各种噪声对OFDM系统误码率(BER)性能的影响。
- Besides,based on the given system model OFDM system is computer simulated with MATLAB language and the referential design procedure is given. 在给出OFDM系统模型的基础上,用MATLAB语言实现了整个系统的计算机仿真并给出参考设计程序。
- Making use of IFFT/FFT at the the sending port,a sequence of reducing the peak in frequency domain is produced to reduce PAPR in OFDM system. 在系统的发送端利用IFFT/FFT变换对,产生频域消峰序列,以降低OFDM系统峰均比。
- However, high Peak-to-Power Ratio (PAPR) is always a serious problem which debases the performance of OFDM system very much. 然而，过高的峰均比(PAPR)一直是影响OFDM系统性能的重要因素。
