网友评机:迷雾中的CDMA

来源 :数字通信 | 被引量 : 0次 | 上传用户:roamer_wsj
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
中国联通是我国惟一具有完整电信业务的电信公司,一直以来得到国家政策支持。几年下来联通发展迅速,特别是在移动通信业务市场,占到了3成份额。 然而,联通的日子并不好过,由于发展时间上过晚,其业务收入还远远不及中国电信和中国移动。从中国电信分离出去的中国移动,占领了移动市场绝大部分市场份额。最让中国联通头疼就是:尽管联通公司在移动电话业务上享有价格的政策优势,但看中完整的网络覆盖,较好售后服务的高端用户选择联通的太少,中国移动依靠多年发展的网络优努,拥有众多的高端支持者。 为争夺移动通信用户的高端市场,改变目前弱势的局面,中国联通把大量资金投入到CDMA网络建设上,以期用更先进的技术,吸引更多的用户,特别是高端用户。 中国联通的机遇太好,国内也仅有它拥有CDMA牌照,但CDMA真的就一帆风顺了吗?是否真的能够达到联通的期望值呢?我们面前还是一团迷雾。我们不妨来听听网友们怎么看待吧! China Unicom is the only telecom company in China that has a complete telecom business and has always been supported by the national policy. Unicom has developed rapidly over the years, especially in the mobile communications market, accounting for 30% of the share. However, China Unicom’s days are not good, due to the development time is too late, its business income is far less than China Telecom and China Mobile. China Mobile, separated from China Telecom, has taken over the vast majority of the mobile market. Most China Unicom headache is: Although China Unicom enjoys the price of mobile phone services on the policy advantages, but fancy complete network coverage, better after-sales service users choose too few high-end China Unicom, China Mobile rely on years of development of network excellent Nus, has a large number of high-end supporters. In order to compete for the high-end market of mobile communication users and change the current weak situation, China Unicom put a lot of money into the construction of CDMA networks with a view to using more advanced technologies to attract more users, especially high-end users. Opportunities for China Unicom are so good that they only have CDMA licenses in China, but is CDMA really easy? Is it really able to meet the expectations of China Unicom? In front of us is still a fog. We may wish to listen to netizens how to treat it!
其他文献
运动员猝死(athletic sudden death)又称运动性猝死(exercise sudden death),指在运动中或运动后即刻出现症状,6h内发生的非创伤性死亡[1]。运动员猝死事件给运动员群体带来恐慌,使人们参加体育运动产生顾虑。事实上运动员猝死发生率很低。意大利Veneto地区报道运动员猝死发病率约为1.9/100000运动员/年[2],美国明尼苏达地区1986-1997年间运动
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
The co-reduction roasting and grinding-magnetic separation of seaside titanomagnetite and blast furnace dust was investigated with and without fluorite addition
期刊
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
Sulfuric acid leaching of high iron-bearing zinc calcine was investigated to assess the effects of sulfuric acid concentration, liquid-to-solid ratio, leaching
滚动轴承的电蚀是由轴承内通过的电流引起的表面损伤,防止电蚀的措施有2种:轴承绝缘与轴承通电.铁道车辆的牵引电动机轴承以往都采用绝缘轴承.在此,从以前没有研究过的轴承通
期刊
Huge quantities of zinc leaching residues(ZLRs) generated from zinc production are dumped continuously around the world and pose a potential environmental threa