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自适应发射功率控制是无线通信领域中减小系统误码率、增加系统吞吐量的一项有效技术。对发射端功率控制下MQAM系统的误码率性能进行了研究,得到了MQAM调制时近似最优化的功率分配方案。理论曲线显示,发射端采用功率控制的系统误码率性能将得到一定程度的改善。
Adaptive transmit power control is an effective technique to reduce system bit error rate and increase system throughput in the field of wireless communications. The BER performance of the MQAM system under transmitter power control is studied, and the approximately optimal power allocation scheme for MQAM modulation is obtained. The theoretical curve shows that the BER performance of the transmitter using power control will be improved to a certain extent.