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B07_Ivanovs
- Continuous Phase Modulation (CPM) advantage compare with OQPSK (Offset Quadrant Phase Shift Key)
Blind-frequency-offset
- This is a file for Blind frequency offset estimation for overlap PCC-OFDM systems in presence of phase noise
grdx
- 本文提出了数字与模拟 相结合的自适应对消方案。通过对发射天线耦合过来的参考信号进行采样，转 换为数字信号后输入信号处理器中经调幅调相处理，再经过DAC转换并放大 后和接收机接收干扰信号相抵消，抵消残留信号再采样转换为数字信号后输入 到信号处理器中调整调幅调相的权值，重复上述过程，形成模拟和数字相结合 的自适应干扰抵消，最终使干扰噪声得到了衰减。 -This paper presents a combination of digital and analog adaptiv
On-the-Design-of-Frequency-Domain-Equalizers-for-
- This paper considers frequency-domain receiver design for OQPSK signals (Offset Quaternary Phase Shift Keying). It is shown that conventional QPSK receivers are not suitable to OQPSK schemes since they lead to significant interference between
On-the-Design-of-Linear-Receivers-for-SC-FDE-Sche
- This paper considers the design of linear frequency-domain receivers with oversampling for OQPSK (Offset Quaternary Phase Shift Keying) signals. Based on a receiver structure able to eliminate the residual interference between in-phase (I) an
On-the-Design-of-Iterative-FDE-Receivers-for-OQAM
- This paper considers receiver designs for SC-FDE schemes (Single-Carrier with Frequency-Domain Equalization) employing M-ary OQAM signals (Offset Quadrature Amplitude Modulation). It is shown that the interference between the in-phase (I) and
OFDM-FPGA
- 频率同步是宽带OFDM系统中的关键技术，IEEE 802.11a 采用OFDM技术，利用其前导序列的重复结构，提出了一种分步的粗细频偏捕获与校正算法，同时为了补偿时域同步后的残余相差和适应信道的时变特性，还提出了一种基于频域导频的相位跟踪方案-Frequency synchronization is a key technology in the broadband OFDM systems, IEEE 802.11a uses OFDM technology, the use of the r
Phase-and-Frequency-Detector
- 针对锁频锁相器( Phase and Frequency Detector, PFD) 应用于低信噪比、大频偏的条件, 通过理论分析和仿真验证阐述了窗口类型对系统频偏捕获速度、范围、噪声门限及相位噪声抖动的影响机理. 推导出等效相位噪声功率谱密度的表达式. 证明了大窗口具有更低的噪声门限和更小的稳态相位抖动, 但捕获速度较慢. 为了提高捕获速度, 对鉴相器输出值取极性运算得到改进的PFD 算法. 新算法不仅能增加鉴相增益提高捕获速度 还可以减少等效噪声功率谱密度降低相位抖动 同时新算法不需要乘法
PSKmodulation
- 提出一种全新的子载波调制方式盲识别算法,该算法利用ＯＦＤＭ子载波组的统计特性,然后通过推导得到新的基于混合高阶矩的特征量,使得到新的特征量不受信噪比、载波频偏与相位偏移的影响。 -Proposed a new sub-carrier modulation count Blind Identification Method, the method using the statistical characteristics of the OFDM sub-carrier group, an
ofdm_paper1
- < Channel, Phase Noise, and Frequency Offset in OFDM Systems Joint Estimation, Data Detection, and Hybrid Cramer-Rao Lower Bound>>-Channel, Phase Noise, and Frequency Offset in OFDM Systems Joint Estimation, Data Detection, and Hybrid Cramer
carrier-synxronization-OQPSK
- This article contains analyses of the performance of various carrier synchronization loops for offset quadrature phase-shift-keying (OQPSK) modulation, all motivated in one form or another by the maximum a posteriori (MAP) estimation of carrier