LTE白皮书-motorola

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LTE白皮书-motorola
Long Term Evolution (LTE): LTE白皮书-motorola.pdf (568.97 KB, 下载次数: 22)

2015-6-8 14:01 上传

下载次数: 22

Overview of LTE Air-Interface
Technical White Paper


Abstract — With the emergence of packet-based wireless broadband systems such as WiMAX 802.16e,
it  is  evident  that  a  comprehensive  evolution  of  the  Universal  Mobile Telecommunications  System
(UMTS) specifications is required to remain competitive. As a result, work has begun on Long Term
Evolution (LTE) of the UMTS Terrestrial Radio Access and Radio Access Network aimed for commercial
deployment in 2010. Goals for the evolved system include support for improved system capacity and
coverage, high peak data rates, low latency, reduced operating costs, multi-antenna support, flexible
bandwidth operations and seamless integration with existing systems. To reach these goals, a new
design for the air interface is envisioned. This paper provides a preliminary look at the air interface for
LTE Evolved UTRA (E-UTRA) and associated key technologies required to reach its design objectives.
Initial LTE E-UTRA system performance results show a 2 to 3x improvement over a reference Rel-6
UMTS/HSxPA system configuration [1, 2] for both uplink and downlink