【摘 要】
:
Cell search is an important aspect for 3G long-term evolution (LTE). This article deals with cell search in the time-division-synchronou code-division multiple
【机 构】
:
Key Laboratory of Universal Wireless Communications,TD Technology Ltd.
论文部分内容阅读
Cell search is an important aspect for 3G long-term evolution (LTE). This article deals with cell search in the time-division-synchronou code-division multiple access (TD-SCDMA) LTE system. On the basis of the synchronization channel (SCH) and cell specific reference symbols (CSRSs), the proposed cell search procedure includes five stages: frame detection and coarse timing, coarse carrier frequency offset (CFO) estimation, fine timing, fine CFO estimation, and cell identification. The key features of the proposed method are as follows: first, the neighboring three cells CSRSs are frequency division multiplexed (FD) to mitigate inter-cell interference. Second, the frequency domain differential cross-correlation, computed from CSRSs are maximally ratio combined for cell identification. Finally, the large set Kasami sequences are quadrature phase shift key (QPSK) modulated to be cell specific sequences (CSSs), to support a large number of target cells. Simulations show that the FD method is better than the code division multiplexed (CD) method.
其他文献
负荷作为电力系统的一个重要组成部分,其模型的精确程度将在很大程度上影响分析的结果.采用电力系统同步数据对电力系统负荷区域进行建模、网络化简和负荷模型辨识,提出了基
目的 研究护理服务价格与价值的关系以及对护理学科发展的影响.方法 按照中国行政区域划分随机抽取7个省市,对护理服务项目价格标准进行描述性分析,并将部分项目进行成本回收
A novel intelligent drug delivery system potential for the more effective therapy of the diabeticswas proposed, and the composition of system was analyzed. Base
A three. dimensional mathematical model for the transferred-type argon arc was developed to describe arc force on the anode surface. The software ANSYS was empl
Adoptive immunotherapy involving the transfer of autologous tumor or virus-reactive T lymphocytes has been demonstrated to he effective in the eradication of ca
Objective:To study the effect of Jinguo Weikang Capsule (金果胃康胶囊,JWC) on the gene expression of H-ras,epidermal growth factor receptor (EGFR),P53 and C-myc
Objective To investigate the prevalence of parental anxiety associated with epileptic children, and to explore whether and how this specific condition affects c
In order to investigate the role of Caspase-3 and Bax in the pathogenesis of lichen planus, immunohistochemistry was used to detect the expression of Caspase-3
The aim of this study was to evaluate the efficiency and safety of ultrasound-guided thrombin injection on femoral pseudoaneurysm (FPA) as compared to ultrasoun
Whether inhibiting the activity of nuclear factor (NF)-κB potentiates cisplatin-induced apoptosis in non-small cell lung cell line A549 cells was investigated.