rayleigh number 中文意思是什麼
rayleigh number
解釋
瑞利數-
Abstract : by comparing the channel capacities hetwem orthogonal space - time block coding and multi - antenna array system over rayleigh fading channel, some capacity loss for orthogonal space - time block coding is obtained, which is a function of the code rate, the rank of channel matrix and the number of transmitter and receive antennas, although the system of orthogonal space - time block codes is simple and easy to implemented. if is also shown that there is no capacity loss only if both the code rate and the channel matrix rank are all one
文摘:在研究瑞利衰落條件下正交空時分組編碼通道容量的基礎上，將其與多發送多接收天線系統的通道容量進行了比較.比較結果表明，正交空時分組碼雖編碼簡單，易於實現，但在通道容量方面存在較大的損失，損失的程度與編碼碼率、通道矩陣的秩及收發天線數等因素有關.進一步研究表明只有當編碼碼率和通道矩陣的秩都為1時，才沒有通道容量的損失 -
Modified rayleigh number
修正瑞利數 -
Critical rayleigh number
臨界瑞利數 -
For example, the average number of retransmissions can be decreased 50 % at 1 db snr in the gaussian channel and 9 db snr in the rayleigh channel
如在高斯噪聲環境下，信噪比為1db時減少超過50 % ；在瑞利噪聲環境下，信噪比為9db時也減少了50 % 。 -
The authors discuss the statistical distributions of multiple - input multiple - output mimo channels over flat rayleigh fading via the order statistics analysis. simplified expressions are derived for expectations of the vector energies when the column or row number is equal to 1 and 2, which is followed by the upper and lower bounds when the antenna number at one side approaches infinite
以順序統計量分析rayleigh平坦衰落mimo通道矩陣各向量能量的分佈特徵，給出其各階矩公式以及列行數為1和2時行列向量的能量期望值的簡潔表達式，並由此推導出通道矩陣的單邊維數趨于無窮時行和列向量能量期望值的上下界。 -
The recirculation cavity flows caused by temperature difference are simulated, and the relations between the flow patterns and the rayleigh number are analyzed
對由溫差引起的空腔流動進行了模擬，分析了流動特性與雷利數的關系。 -
And then, numerical simulation of double diffusive in a square cavity with opposing temperature and concentration gradients is executed. effects of rayleigh number, lewis number and buoyant ratio on flow structure and distribution temperature and concentration are analyzed at large
並以常溫下的水為研究介質的，應用quick格式分析了層流下方腔內雙擴散流動特徵，探討了ra 、 le 、浮力比對雙擴散流動的影響。
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