释义 |
SDMACOCA²³¹⁰⁵⁵ 基本例句 n.顺序分配多路存取¹⁰⁰ On the other hand, utilizing the smart antenna and the users' spatial information, we can develop the Space Division Multiple Access SDMA technology. 另一方面,利用智能天线和用户空间位置信息可以实现空分多址 SDMA接入技术。 cnki The space division multiple access SDMA is introduced, and users can be distinct from each other through their special location. 智能天线引入空分多址的概念,通过用户空间位置的差异对其进行分离。 fabiao The SDMA technique has great potential to be applied in the future civilian or military mobile communication system. 空分多址技术在未来的民用或军用移动通信系统中具有很大的应用潜力。 cnki Based on SDMA, multi- user beamforming can achieve multi- user diversity gain from the different channel feature. 基于空分多址 SDMA的多用户波束赋形利用用户间的不同信道特性取得多用户分集增益。 fabiao In the joint multiple access systems, which are based on the CDMA and SDMA techniques, the assignment of spreading codes should be based on the orthogonality of the spatial vector of the mobile users. 在基于码分多址 CDMA和空分多址 SDMA技术的联合多址系统中,扩频码的分配应根据移动用户空间向量的正交性来进行。 dictall Simulation shows that performance of the designed SDMA system is obviously better than the conventional system which uses mean square error as its cost function. 模拟结果表明,这样得出的 MIMO SDMA系统性能比传统的以最小均方误差为标准的系统性能有明显的改善。 airiti This paper analyzed the performance of the uplink of space- time coded OFDM/ SDMA systems assuming each user is equipped with two transmit antennas. 分析了每用户双发送天线的空时编码 OFDM/ SDMA系统上行链路的性能。 cnki This paper proposes a new technique, which combines SDMA with spread spectrum CDMA. In SDMA, multi- beamforming is available by parallel data processing and one aircraft is tracked by one beam. 笔者提出空分多址和码分多址结合,用并行数据处理形成多波束,每一个波束跟踪一个目标,以实现多飞行器测控。 cnki This method may use in the SDMA and cell location system. 此方法对蜂窝定位,空分多址系统的实现也有实用价值。 cnki With the simplified OFDM/ SDMA system model and some assumptions of the physical layer, two scheduling schemes were proposed. 在简化的 OFDM/ SDMA系统模型下和一些物理层假设下,提出了两个启发式的调度算法。 fabiao SDMA technology provides the advantage of splitting one of the three slots to provide two-slot functions. SDMA技术提供了一种优势,就是将三个时隙之一进行分离,使之具备两个时 隙的功能。 docin |