专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US06370129B1 High-speed data services using multiple transmit antennas 有权
标题翻译：使用多个发射天线的高速数据业务
公开(公告)号：US06370129B1
公开(公告)日：2002-04-09
申请号：US09587345
申请日：2000-06-05
申请人： Howard Huang
发明人： Howard Huang
IPC分类号： H04Q700
CPC分类号： H04B7/0845 , H04B7/06 , H04B7/0615 , H04B7/0669 , H04B7/0891 , H04B2201/70703 , H04L1/0618
摘要： High-speed wireless data systems and methods are described for simultaneously supporting multiple data users, including flexible mixed-traffic services, using an illustrative CDMA architecture. Embodiments are compatible with current and third generation CDMA systems, while achieving spectral efficiencies that are in some cases an order of magnitude or more higher. Embodiments advantageously employ multiple antennas at the transmitter and receiver and code spreading to realize multiple access systems. Some illustrative receiver embodiments advantageously employ a decorrelating detector, while others feature a decorrelating decision-feedback detector. In typical operation, each of a plurality of high-speed data streams directed to respective data users is demultiplexed into multiple (G>1) lower rate substreams, which are modulated by a CDMA spreading code and transmitted from M antennas at a base station. A receiver employs P antennas and multi-user detection to demodulate the G data substreams of its associated user. Performance measures for a variety of illustrative transmission and receiver configurations are derived using novel techniques for calculating system level capacities and spectral efficiencies (measured in bits per second per Hertz per sector). System design and configuration tradeoffs are readily made based on such performance determinations.
摘要翻译：描述了高速无线数据系统和方法，以使用说明性的CDMA架构同时支持多个数据用户，包括灵活的混合业务业务。实施例与当前和第三代CDMA系统兼容，同时实现在某些情况下的数量级或更高的频谱效率。实施例有利地在发射机和接收机处采用多个天线，并且代码扩展以实现多个接入系统。一些说明性的接收机实施例有利地采用解相关检测器，而其他特征则具有去相关的判决反馈检测器。在典型的操作中，指向相应数据用户的多个高速数据流中的每一个被解复用为多（G> 1）较低速率子载波，其由CDMA扩展码调制并且在基站处从M个天线发送。接收机采用P天线和多用户检测来解调其相关用户的G数据子流。使用用于计算系统级容量和频谱效率（以每个扇区每赫兹每秒的位数测量）的新技术，导出了各种说明性传输和接收机配置的性能测量。系统设计和配置权衡很容易基于这样的性能测定。

IPRDB

热门服务

关于我们

友情链接

联系方式