CAJ | 학술논문

对单用户OFDM系统的3种自适应比特加载算法:Hugehes-Hartogs比特功率梯度分配算法、Chow算法和简单分块加载(SBLA)算法进行了仿真,分析比较了3种算法的复杂度和抗噪声性能.仿真结果表明:每种算法各有其优缺点和适用情况,可以根据不同的工程需求选择不同的算法.Hugehes-Hartogs算法能使系统发射总功率达到最低;Chow算法具有较好的抗噪声性能;SBLA算法的性能介于上述2种算法之间,并且具有较低的复杂度.
대단용호OFDM계통적3충자괄응비특가재산법:Hugehes-Hartogs비특공솔제도분배산법、Chow산법화간단분괴가재(SBLA)산법진행료방진,분석비교료3충산법적복잡도화항조성성능.방진결과표명:매충산법각유기우결점화괄용정황,가이근거불동적공정수구선택불동적산법.Hugehes-Hartogs산법능사계통발사총공솔체도최저;Chow산법구유교호적항조성성능;SBLA산법적성능개우상술2충산법지간,병차구유교저적복잡도.
In the research of adaptive bit allocation algorithm in single OFDM system, the following three algorithms such as Hugehes-Hartogs bit power grad allocation algorithm, Chow algorithm and single block loading algorithm (SBLA) are simulated, and the anti-noise performance as well as complexity of the three algorithms are analyzed and compared through simulations. The simulation results show that the different algorithm has its own advantage and application instance. We can select one of them according to different projection needs. The Hugehes-Hartogs algorithm makes the system have the lowest transmit power;the Chow algorithm has the better performance;the performance of the SBLA algorithm that has the lower complexity is between the aforementioned two algorithms.