移动通信作为一个科技密集型和知识密集型的高新技术产业，在现代市场经济条件下，在竞争空间日趋激烈和社会信息化发展趋势下，必须十分重视市场营销管理，重视市场营销管理体系建设。要充分根据市场需求的现状与趋势，制定计划，合理有效配置资源。通过有效地满足市场需求，来赢得竞争优势，在加快市场营销步伐的同时，努力建立和完善移动通信市场营销管理体系，以不断适应新的发展形势需要。-Mobile communications as a technology-intensive and knowledge-inten

This the third post in the series discussing receiver diversity in a wireless link. Receiver diversity is a form of space diversity, where there are multiple antennas at the receiver. The presence of receiver diversity poses an interesting problem –

Multiple antenna (MIMO) devices are widely used to increase reliability and information bit rate. Optimal error rate performance (full diversity and large coding gain), for unknown channel state information at the transmitter and for maximal rate, ca