Capacity of 60GHz Wireless Communications Based on QAM.

With apparent advantages of the severalGHz license-free spectrums, 10Wmaximumtransmit power, and so forth, 60GHz wireless communication technology has become the first choice for Gbps level short-range wireless communications. This paper researches 60GHz wireless communications over the additive white Gaussian noise channel. Channel capacity with quadrature amplitude modulation (QAM) is investigated for the unlicensed 59-64GHz radio spectrum set aside by FCC. Moreover, the capacity with QAM is compared to that with phase shift keying (PSK). It is shown that QAM is capable of providing Gbps data rate and outperforms PSK especially when the modulation order is large. The results prove that QAM is an attractive scheme for 60GHz wireless communications. [ABSTRACT FROM AUTHOR]