57、本发明提供一种正交频分复用二进制方波负载波(ofdm-boc)导航信号的构建方法,由于现有的导航信号主要是窄带调制,导航信号的功率谱密度存在多个峰值与峰谷,随着通信带宽越来越宽,当前的调制方式无法充分利用宽带资源;而本发明提出的ofdm-boc导航调制,功率谱密度是由各个子载波的功率谱密度叠加得到的,在整个带宽内是...
In this paper, BOC modulation is introduced into the time and code division orthogonal frequency division multiplexing (TC-OFDM) system, leading to multiple peaks of autocorrelation function (ACF), which will absolutely result in acquisition ambiguity in the traditional BPSK signal receiver. An ...
别名N-Boc-氨基甲酸叔丁酯 英文别名STL556127 | tert-butyl[(tert-butoxy)carbonylamino]formate | XCAQIUOFDMREBA-UHFFFAOYSA-N | Imidodicarbonic acid, bis(1,1-dimethylethyl) ester | di-tert.butyl-iminodicarboxylate | HY-60280 | N-Boc-tert-butylcarbamate | Di-tert-butyl-iminodicarboxylate, >=96...
Furthermore, we adopt the high-precision Doppler frequency offset tracked by the BOC signal to assist in the demodulation of the OFDM signal. This approach can considerably reduce the impact of the Doppler frequency offset on the OFDM signal. Moreover, a significant improvement in the measurement...