BEYOND 3G EVOLUTION

被引：15
|
作者：
Zheng, Kan [1 ,2 ]
Huang, Lin
Li, Gang
Cao, Hanwen
Wang, Wenbo [3 ]
Dohler, Mischa [4 ]
机构：
[1] Siemens Ltd, TD SCDMA R&D Ctr, Beijing, Peoples R China
[2] France Telecom R&D, Orange Labs, Beijing, Peoples R China
[3] BUPT, Sch Telecommun Engn, Beijing, Peoples R China
[4] Kings Coll London, Ctr Telecommun Res, London, England
来源：
IEEE VEHICULAR TECHNOLOGY MAGAZINE | 2008年 / 3卷 / 02期
关键词：
D O I：
10.1109/MVT.2008.923968
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Some important initiatives are being taken in the design process of beyond 3G (B3G) systems. The initiatives are carried out by the 3G partnership project's innovative approaches to increase the spectral efficiency and hence decrease the cost per b/s/Hz over the air interface. The technical requirements on the emerging B3G air-interface are augmenting. LTE is investigating the use of orthogonal frequency division multiplexing (OFDM) with adaptive modulation, a carrier spacing of 15 kHz and a maximum of 2048 subcarriers. Numerous mathematical and simulation studies have already been performed. An enabler of modification of the system parameters and adaptability of different layers to experimental needs is the software defined radio (SDR), which in essence is a minimum set of programmable hardware facilitating the processing of digitized signals in software. SDR provides sufficient flexibility by performing the functions of the physical layer (PHY) and medium access control (MAC).
引用
收藏
页码：30 / 36
页数：7
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