Adaptive polynomials method for FBMC nonlinear power amplifier complex gain
Conference proceedings article
ผู้เขียน/บรรณาธิการ
กลุ่มสาขาการวิจัยเชิงกลยุทธ์
ไม่พบข้อมูลที่เกี่ยวข้อง
รายละเอียดสำหรับงานพิมพ์
รายชื่อผู้แต่ง: Songratthaset D., Pattaramalai S.
ปีที่เผยแพร่ (ค.ศ.): 2017
หน้าแรก: 366
หน้าสุดท้าย: 371
จำนวนหน้า: 6
ISBN: 9788996865094
นอก: 1738-9445
ภาษา: English-Great Britain (EN-GB)
บทคัดย่อ
In this paper, an adaptive polynomials for nonlinear power amplifier complex gain of a filter bank multicarrier modulation (FBMC) is modelled. One of the main problems in FBMC systems is the high peak-to-average power ratio (PAPR) of transmitting signals which leads to a significant distortion when passed through a nonlinear device such as a high power amplifier (HPA) of transmitter. Therefore, analytical expression of HPA characteristic based on an orthogonal polynomial method is investigated. From the simulation result, the HPA modelling error of the orthogonal polynomial method is better than that of the conventional polynomial method at a high input value. As a result, a combination of the orthogonal polynomial method and the conventional polynomial method, called the adaptive polynomial method, is proposed. With this method, the orthogonal polynomial method is applied for a high input value and adopts the conventional polynomial method for a low input value. A comparison with the simulation results is carried out to verify the accuracy of this method. ฉ 2017 Global IT Research Institute - GiRI.
คำสำคัญ
FBMC, Memoryless HPA, Nonlinear system, Orthogonal polynomial, Power amplifier