并在保证系统可靠性要求下，针对不同的信道衰落条件选取合适的QAM星座图级别。

An adaptive constellation levels were selected for different channel states to increase throughput under the constraint of the system's BER.

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滚动参数列表(图4)并找到相关的权限级别参数。

Scroll through the list of parameters (Figure 4) and find the associated authority level parameters.

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图5举例说明了适当的详细级别。

Figure 5 illustrates the appropriate level of detail.

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