| 1. | Hc - sdma high capacity - spatial division multiple access hc - sdma
大容量-空分多路存取 |
| 2. | Brief introduction of sdma 2006 spray forming rapid prototype technology
喷射成形快速原型技术 |
| 3. | 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。 |
| 4. | Space division multiple address sdma
空分多址 |
| 5. | Space division multiple access sdma
空分多址 |
| 6. | Sdma space division multiple access
空分多址 |
| 7. | On condition that all packets can be received successfully , the basestation dynamically schedules uplink and downlink traffic to achieve efficient sdma . approximate analysis of channel utilization is presented
结果表明， asama协议能有效支持多波束智能天线应用以实现信道空分复用，具有很高的信道利用率与良好的时延性能。 |
| 8. | Beamforming comes from smart antenna with strengthening desired signal and suppressing inter - users interference as its typical technical superiority . it is also the base to realize sdma ( space division multiple access )
波束形成技术源于智能天线、增强期望、抑制用户干扰是其典型的技术优势,也是sdma ( spacedivisionmultipleaccess )能够得以实现的基础。 |
| 9. | Simulation results show that abf - csma / ca protocol can realize space - division - multiple - access ( sdma ) and provide very high channel utilization . chapter 3 considers employing smart antennas in the central access point ( cap ) of wireless internet access networks
第三章研究了智能天线在internet无线接入网络中的应用，主要考虑使用智能天线对抗同信道干扰与多径衰落，增加覆盖范围，并在mac层实现智能天线与网络的有机结合。 |
| 10. | Due to the data transmission characteristics between tags and reader , space division multiple access ( sdma ) , frequency division multiple access ( fdma ) and code division multiple access ( cdma ) are applied in a limited way in rfid system . therefore , time division multiple ( tdma ) has been generally accepted . according to tdma , there are aloha protocol , s - aloha , binary - tree protocol , clipped binary - tree protocol and others
解决这个问题必须要用到多路存取法，针对射频识别系统中阅读器与应答器之间的通信特点，空分多路法、频分多路法、码分多路法在rfid系统中应用都受到一定的限制，只能应用到一些特定的场合，一般采用时分多路法，按照时分多路法的算法有aloha算法、时隙aloha算法、二进制树型搜索算法、修剪枝的二进制树型搜索算法等防碰撞算法协议，分析了各自特点以及存在的缺点。 |
