OFDM-IM索引调制系统相对于传统的OFDM系统而言,其最要区别在于被激活的子载波数量被降低,因此其对子载波数量相对于OFDM系统而言较为稀疏,那么其对频偏更加的不敏感。另外一方面,通过OFDM-IM索引调制技术,则可以在传统OFDM调制系统的基础上加入一个调制域,补偿未被激活的子载波带来的频谱利用率方面的损失,从而起到提高...
对于时域上的OFDM符号，在频域上会存在IM-CSI-RS或NZP-CSI-RS资源没有占满整个符号的情况，协议支持通过ZP-CSI-RS资源指示UE哪些RE没有映射数据。没有映射数据的RE资源会浪费，gNodeB通过ZP-CSI-RS资源通知UE，该符号在频域上有位置可映射数据，从而实现UE可用RE数的增加。PDCCH SSB 对于SSB与PDSCH DMRS冲突的...
[0049]在诸如通过基带处理器108a传送OFDM信号或OFDMA信号的一些实施例中,发送基带处理器404可以被配置为通过执行快速傅立叶逆变换(IFFT)来生成适合于发送的OFDM或OFDMA信号。接收基带处理器402可以被配置为通过执行FFT来处理接收的OFD信号或OFDMA信号。在一些实施例中,接收基带处理器402可以被配置为通过执行自相关检测前导...
如果有多个空间流以该ue350为目的地,那么它们可由rx处理器356组合成单个ofdm码元流。rx处理器356随后使用快速傅里叶变换(fft)将该ofdm码元流从时域变换到频域。该频域信号对该ofdm信号的每个副载波包括单独的ofdm码元流。通过确定最有可能由基站310传送的信号星座点来恢复和解调每个副载波上的码元、以及参考信号。这些...
Zhang, “Sparse reconstruction-based joint signal processing for MIMO-OFDM-IM integrated radar and communication systems,” Remote. Sens. (Basel), Vol. 16, no. 10, pp. 1773, 2024. (Open in a new window)Web of Science ®(Open in a new window)Google Scholar S. Lee, W. S. Lee, ...
verhcaldsperwonalmndequencicyhgh.beaquencyuninhecoofDM64D)Thetwoinierconnectingcablejnavarttblcandthcjnailsien DM4640Theporledrefle4万Enheueswepemy直Iermmndisaeconnectediogethetbysoldiplocdngchain4combinabonofvsrableswhichthoud 200mm(8m)Cobesdophresmlow.FeauencyumsSnlsandcherpomeybeusedtoconnectthesy...
tiveratesofDM。IGTandIFGwere6.6%,10.5%and5.1%inmale,and5.1%,12.5%and3.3%infe. male.Thepositiverates DMandIFGinmalewerehigherthanthoseinfemale(P<0.05).24h.Un LB Was43.2 ±14.3mginFPGdiagnosingDMgroup。30.4±15.3mgin0(3TTdiagnosingDMgroupand ...
(type B). The positions of any additional DM-RS symbols are defined by a set of tables, as specified in TS 38.211 Section 7.4.1.1.2[1]. For the purpose of indexing the tables, the specification defines the termldindicating the duration of OFDM symbols to be accounted for, depending ...
PT-RS for CP-OFDM PT-RS is the phase tracking reference signal. PT-RS is used mainly to estimate and minimize the effect of CPE on system performance. Due to the phase noise properties, the PT-RS signal has low density in the frequency domain and high density in the time domain....
(type B). The positions of any additional DM-RS symbols are defined by a set of tables, as specified in TS 38.211 Section 7.4.1.1.2[1]. For the purpose of indexing the tables, the specification defines the termldindicating the duration of OFDM symbols to be accounted for, depending...