The number of smaller units ( bits, bytes, characters, words ) in a larger unit (" word length ", " block length ", " message length " ). 大单元(字长、块长、报文长)中较小单元(位、字节、字符、字)的数目。
A scheme is proposed to optimize the beamforming block length for time division dup lex ( TDD ) systems in this paper. 提出了一种优化时分双工系统波束赋形块长的方案。
The diversity gain is relative to the block length, and can amount to the full diversity gain only when the block length is no less than the number of transmit antennas. 分集增益的取值与分组长度有关,只有当分组长度不小于发射天线数目时才能获得满分集增益。
In addition, the plaintext determined block length can effectively resist chosen plaintext attack and chosen ciphertext attack. 此外,明文相关的分组长度可以有效的抵御选择明文或选择密文攻击。
The effect of PAN block length on the thermal properties of PEO and PAN was also study. 研究表明,PAN嵌段长度对PEO的熔点、PAN的玻璃化转变温度有很大的影响。