elseif (QAMsize==8) h = modem.pskmod('M', QAMsize, 'SymbolOrder', 'Gray','InputType', 'Bit'); else error('the modulation size %d is not supported!', QAMsize); end NormFactor = sqrt(QAMsize/sum(abs (h.Constellation).^2)); Constellation = NormFactor.*h.Constellation; %%%%%%%...
If you intend to do dynamic modulation changes and you want to go back to QPSK if the plant gets “noisy,” use this cable modulation profile 2: cab modulation-prof 2 request 0 16 0 8 qpsk scram 152 no-diff 64 fixed uw16 cab modulation-prof 2 initial 5 34...
Constellation QPSK, 16QAM, 64QAM Guard Interval 1/32, 1/16, 1/8, 1/4 传输模式 2K 码率 1/2, 2/3, 3/4, 5/6, 7/8 MER ≥42dB RF frequency 50~960MHz, 1KHz step RF output level -34~-10dBm , 0.1dBm step 系统功能 网络管理 (WEB-NMS...
16-QAM Modulation REF LVL –8dBm 1.2 CF 42MHz MEAS SIGNAL SR 1.28MHz CONSTELLATION DEMOD 16QAM –1.2 –1.5 REAL Figure 17. QPSK Modulation 1.5 –1.2 –1.5 REAL Figure 19. 16-QAM Modulation 1.5 –10– REV. C AD9853 95 0.80 BIT RATE >2Mb/s CLK = 122.88 MHz 85 VCC = +5V 0.75 ...
The RCs correspond to various modulations that may each have a unique constellation and corresponding mapping. Different RCs may be included within a rate control sequence that correspond to 16 QAM, 16 APSK, QPSK (Quadrature Phase Shift Key), or even other modulation types. In addition, 1 or ...
在拟议的模式,将每个符号的 2 位映射到阶段,如图 2 (a) 中所示的 M-PSK 块中考虑 QPSK 映射。2 数据位中的每个组合对应于一个唯一我 Q 向量。在 M-PSK 块中,通过更改 bits 每个符号,我们可将数据映射为 8-PSK,16-PSK 等。通过将移动到高的顺序星座,是可以传输更多位数每中平行造成高速通信中的符号...
Constellation QPSK, 16QAM, 64QAM Guard Interval 1/32, 1/16, 1/8, 1/4 Transmission Mode 2K, 4K, 8K Code rate 1/2, 2/3, 3/4, 5/6, 7/8 MER ≥40dB RF frequency 50~960MHz, 1KHz step RF out 6 (or 16) non-adjacent carriers output (maximum bandwidth 192M...
r1π/4r2π/1250图116APSK的信号星座图Fig.1Constellationdiagramof16APSK signal 2 数据辅助的频偏估计算法性能仿真及分析 数据辅助的频偏估计算法是利用已知导频估计频偏。对 16APSK 信号进行以下处理: 55 zk ya* 以下是数据辅助的 Kay[7]、Fitz[8]、L&R[9]和 M&M[10] 载波频偏估计算法: vˆKay 1 ...
Data transmissions in a mobile communication system employing diversity and constellation rearrangement of a 16 QAM scheme The invention relates to methods for transmitting and receiving a data bit stream in a communication system using 16-QAM constellations. Further, an apparatus for performing the meth...
Constellation QPSK, 16QAM, 64QAM Guard Interval 1/4, 1/8, 1/16, 1/32 FEC 1/2, 2/3, 3/4, 5/6, 7/8 MER ≥42 dB RF frequency 50~960MHz, 1KHz step RF out 8 non-adjacent carriers output (maximumbandwidth 192MHz) RF output level -20~ +3dBm, 0.1db step ...