GPS基带信号处理的本质就是要尽可能精确地估计中频信号的三个参数:t时刻码的传播延迟(码相位)、载波的多普勒频率和初相位。这三者的精确估计是通过信号跟踪过程中的码环和载波环来实现的,但在此之前通道应该能够获取三个参量的近似估计值。这就是信号捕获的目的。
...词: 分时长期演进系统;数字信号;基带处理;多处理器 [gap=1076]Key words: TD-LTE;Digital signal;Baseband processing;Multiprocessor ...
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This thesis primarily discussed the baseband processing of SS communication signal based field programmable gate array (FPGA) ASIC chip.
本论文主要讨论和实现了基于FPGA的扩频通信信号的基带处理。
参考来源 - 基于FPGA实现的扩频通信系统The module combining channel LS estimation based on pilot with equalization algorithm is added to the base-band processing module in the OFDM system.
最后将基于导频的LS信道估计与均衡算法模块加入OFDM系统的基带处理项目的整体模块中进行测试。
参考来源 - 衰落信道下OFDM系统信道估计技术研究与实现Data after AD sampling and digital down converter transfer to computer through PCI bus interface, while base-band signal processing may choose COTS DSP board or general high-performance PC in term of the need.
AD采样、数字下变频后的数据通过PCI接口传入计算机,基带处理可视需要选用多种商用DSP处理板,或选用高性能PC机。
参考来源 - 中频数字接收机设计与实现·2,447,543篇论文数据,部分数据来源于NoteExpress
AIS系统由通信处理模块、基带处理模块、射频模块和接口模块组成。
AIS system is composed with communication processing module, base band processing module, radio module and interface module.
在数字基带处理时,从正常载频信道中提取出导频信号,用于伪导频的发射。
When processing digital base-band, the signal of pilot-frequency was taken out from normal carrier channel and it would be used for transmitting pseudo pilot-frequency.
OFDM可以使接收机中的基带处理单元大大简化,并且可以提高数据速率。
OFDM can simplify the base-band processing unit of the receiver greatly and can increase the data rate.
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