Energy efficient time-modulated OFDM directional modulation transmitters

被引：2
|
作者：
Hou, Jiayu [1 ]
Purushothama, Jayakrishnan M. [1 ]
Fan, Haijun [1 ]
Song, Chaoyun [1 ]
Ding, Yuan [1 ]
Sellathurai, Mathini [1 ]
机构：
[1] Heriot Watt Univ, Inst Sensors Signals & Syst, Edinburgh EH14 4AS, Midlothian, Scotland
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2023年 / 65卷 / 01期
基金：
英国工程与自然科学研究理事会;
关键词：
direction modulation (DM); energy efficient; orthogonal frequency division multiplexing (OFDM); reconfigurable power divider (RPD); time modulated array (TMA); ARRAY;
D O I：
10.1002/mop.33438
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this study, a reconfigurable power divider (RPD) enabled energy efficient direction modulation (DM) transmitter for orthogonal frequency division multiplexing (OFDM) modulated data transmission is proposed. The RPD can smartly select the output ports and operate as a power divider or a switch with appropriate control conditions. Hence, the RPD is able to recycle the energy in the 'OFF' state antennas, which is otherwise wasted in the conventional DM transmitter constructed using a fixed power divider and switches. It has been shown in a 4-element array example that the newly proposed RPD-based OFDM DM transmitter can provide 1.5-7.8 dB SNR gains (or in the other way, reducing power consumption by 1.5-7.8 dB) for different excitation strategies.
引用
收藏
页码：5 / 13
页数：9
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