%0 Journal Article
%T Bit and Power Allocation Algorithm for OFDM System<br>OFDM系统功率和比特分配算法研究
%A Yu GuanDing
%A Zhang ChaoYang
%A Chou PeiLiang
%A <br>余官定
%A 张朝阳
%A 仇佩亮
%J 电子与信息学报
%D 2005
%I 
%X The maximization of data rate under the constraint of total transmit power and bit error rate is a considerable issue in OFDM system. Recognizing that the number of bits on each subcarrier must be a discrete number for real systems, this paper proposed two bit allocation algorithms which are modified greedy algorithm and water filling level binary searching algorithm. Simulation results show that the complexity of modified greedy algorithm is 10% of that of greedy algorithm and 5-7 iterations are enough for 0.5% data rate loss when SNR is above 10dB.
%K OFDM<br>比特分配
%K 贪婪算法
%K 灌水法则
%K 对分搜索
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=D7FC04ECD08B090E&yid=2DD7160C83D0ACED&vid=DB817633AA4F79B9&iid=9CF7A0430CBB2DFD&sid=01AFAE7A0B7C782E&eid=36534BF3EA0E1826&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=1&reference_num=7