Dect is an access technique that corresponds to the lower 3 layers of the osi model , and has no agreement at physics construction and application layer in protocol , so a designer should design according to the customer ' s demand Dect严格来说是一种接入技术,它对应于osi的底三层,对于具体的物理结构和应用层方面没有在协议上作规定,所以设计者应该根据用户的需要作具体的设计。
The practical aspects of these multiple access techniques are also discussed and compared . the hybrid schemes , which combine the advantages of both orthogonal and non - orthogonal techniques , can provide promising solutions for future wireless cellular communications 我们讨论和比较了这些接入方式在实际应用方面的因素,指出综合正交和非正交方式优点的hybrid系统可能是未来无线蜂窝通信的一种可行方案。
Nowadays , academic communities and industry from all over the world are increasingly showing great concern about a new broadband residential ip - based access technique , i . e . ethernet technique in the subscriber access network or the broadband residential ethernet - based access network 特别是,众多研究人员、网络设备制造商和标准化组织开始关注一种新的宽带ip接入技术,也就是基于以太网的宽带接入技术。
Spread spectrum code division multiple access technique ( ss - cdma ) has successfully been applied in the second generation mobile communication system , such as is - 95 . moreover , the main technique of the third generation mobile communication system is also based on cdma 扩频码分多址已成功地应用于第二代移动通信中,如is - 95 ,而且第三代移动通信的主要方案也都是基于码分多址cdma ,因此cdma技术具有无可争辩的竞争力。
Multi - carrier technique is a effective method that decreases the ratio of delay spread to symbol duration in high speed data transmission , which is one of key techniques in wireless data communication and will probably be one of wireless access techniques in the next generation mobile communication network 它是高速移动数据通信中的一项核心技术,也是未来无线宽带接入系统的基本实现技术之一,同时也可能成为下一代蜂窝移动通信网络的无线接入技术。