16-QAM (16-Quadrature Amplitude Modulation) 是一种常见的数字调制技术。在16-QAM中,“16”表示符号的总数,每个符号代表4个比特(因为24=1624=16)。也就是说,每个符号可以携带4个比特的信息。这样的编码方式使得16-QAM在同样的带宽条件下能够传输更多的数据。 数学原理 在16-QAM中,每个符号都由两个正交的载波...
The apparatus may enable selection of a modulation order (Q) parameter, a transport block size (TBS) parameter, a quantity of subframes in a transport block (N) parameter, and/or the like. For example, based at least in part on receiving a downlink control information or another factor, ...
16-QAM(16-Quadrature Amplitude Modulation) 描述:通过幅度和相位共同调制信号的方式,每个符号能够表示4个比特数据。 优点:数据速率显著提高。 缺点:抗噪性能进一步降低,适合信噪比较高的传输环境。 64-QAM(64-Quadrature Amplitude Modulation) 描述:16-QAM的扩展版本,每个符号能够传输6个比特数据。 优点:适用于需...
16种不同的码元,这时数据速率是码元速率的( ) A. 2 B. 4 C. 16 D. QuadratureAmplitudeModulation,QAM),就是把两 E. SK和PSK技术结合起来,形成幅度相位复合调制,这也是一种正交幅度调制技术。由于形成了16种不同的码元,所以每一个码元 相关知识点: 试题...
16-Quadrature amplitude modulation modulator for radio links, converting a train of data into signals having a phase selected out of 16 phase values and an amplitude selected out of four values, said modulator comprising means for dividing said data train into two data sub-trains, two four-phase...
16-QAM is a type of Quadrature Modulation (QAM) in which a carrier wave of a fixed frequency can exist in one of sixteen different states. This can be represented in a constellation diagram (Figure 1) where each state is a symbol that contains one of 16 different amplitude and phase leve...
摘要:QAM是英文QuadratureAmplitudeModulation的 缩略语简称,意为正交幅度调制,是一种数字调制方式。 16QAM是指包含16种符号的QAM调制方式。以下是基于 MATLAB的MC仿真可用于分析16QAM调制在AWGN信 道中的误码性能。 关键字:QAMAWGN误码性能 一.16QAM调制原理: ...
Wi-Fi 7 is also able to use 320MHz channels and supports 4K quadrature amplitude modulation (QAM) technology, ultimately providing up to 2.4x faster speeds than Wi-Fi 6 with the same number of antennas. Wi-Fi 7 还能够使用 320MHz 信道,并支持 4K 正交幅度调制 (QAM) 技术,最终在相同数量的...
In one embodiment, the 16-quadrature amplitude modulation QAM modulator includes a logic operation device performing a logic operation on first-fourth bits of received data to generate first and second logic outputs. A first quadrature phase shift keying QPSK modulator receives the first and second ...
【答案解析】以下调制中,调制效率最高的是()A.16-QAM(16-QuadratureAmplitudeModulation)B.BPSK(BinaryPhaseShiftKeying)C.QPSK(QuadraturePhaseShiftKeying)D.64-QAM(64-QuadratureAmplitudeModulation)