通信技术
通信技術
통신기술
COMMUNICATIONS TECHNOLOGY
2013年
2期
5-7
,共3页
MIMO-OFDM多用户%子载波分配%比特分配%发射功率
MIMO-OFDM多用戶%子載波分配%比特分配%髮射功率
MIMO-OFDM다용호%자재파분배%비특분배%발사공솔
multiuser MIMO-OFDM%sub-carrier allocation%bit allocation%transmitting power
针对 MIMO-OFDM 多用户系统,在保证用户服务质量 QoS(主要指误码率和速率要求)的情况下,提出了一种分步资源分配算法.在发射功率最小化准则下,算法先根据用户传输速率要求和用户的信道增益对用户进行子载波组分配,再在用户子载波上的所有特征子信道上进行自适应的比特分配.仿真结果表明,该算法复杂度低,降低了系统发射功率,获得良好的系统性能.
針對 MIMO-OFDM 多用戶繫統,在保證用戶服務質量 QoS(主要指誤碼率和速率要求)的情況下,提齣瞭一種分步資源分配算法.在髮射功率最小化準則下,算法先根據用戶傳輸速率要求和用戶的信道增益對用戶進行子載波組分配,再在用戶子載波上的所有特徵子信道上進行自適應的比特分配.倣真結果錶明,該算法複雜度低,降低瞭繫統髮射功率,穫得良好的繫統性能.
침대 MIMO-OFDM 다용호계통,재보증용호복무질량 QoS(주요지오마솔화속솔요구)적정황하,제출료일충분보자원분배산법.재발사공솔최소화준칙하,산법선근거용호전수속솔요구화용호적신도증익대용호진행자재파조분배,재재용호자재파상적소유특정자신도상진행자괄응적비특분배.방진결과표명,해산법복잡도저,강저료계통발사공솔,획득량호적계통성능.
@@@@For multi-user MIMO-OFDM systems, a two-step resource allocation algorithm based on the user’s QoS is proposed. With the criterion of minimizing the transmitting power, this algorithm first allocates the subcarriers to the users in accordance with the users’ transmission rate requirements and channel gains, then all the subchannels of the users’ sub-carriers participate in the bit allocation process. Numerical simulation results show that the proposed algorithm could reduce the total transmitting power and achieve a good system performance.
