A disk storage device that stores data in blocks of fixed size; these blocks are addressed by block number relative to the beginning of the particular file.
一种按固定长度数据块来存储数据的磁盘存储设备，这些数据块按相对于某文件开始的块号进行寻址。
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。
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