【摘要】 正交频分多址(OFDMA)是以正交频分复用(OFDM)调制为基础的新一代多址技术,具有很高的带宽利用率。首先结合OFDMA在有线电视网络中的应用介绍了它的基本原理,然后简单介绍了它在宽带无线接入IEEE802.16a中的应用,主要是关于子信道划分的问题。更多还原

【Abstract】 Orthogonal frequency division multiple access(OFDMA) w hi ch has a high bandwidth availability is a new multiple access technology based o n OFDM.In this paper the principle of OFDMA is first introduced in combination w ith its application to CATV networks.Then its application to broadband wireless access IEEE 802.16a is investigated with focus on the subchannel division.更多还原