iWebSMS2000是一个基于Web的短信平台 =============================================================================== 目前政府、企业信息化，对消息的获取提出了更加严格的要求，需要随时随地、不受 空间、时间、地点的限制；要求主动获取消息，要求能在节省成本，同时保证信息安全， 在这种情况下，本公司自行研制开发了基于Web方式的iWebSMS2000短信消息平台管理方案。 这个方案是采用

Pulse shaping filters are used at the heart of many modern data transmission systems (e.g. mobile phones, HDTV) to keep a signal in an allotted bandwidth, maximize its data transmission rate and minimize transmission errors. Raised cosine filters for

optimal subcarrier allocation for the single user case using a similar method to what is described in [1] and modify the algorithm for multiuser scenario. Although the optimality is not achieved in multiuser case the probability of all users