| Title | Index Modulated OFDM for Underwater Acoustic Communications |
| Authors | Wen, Miaowen Cheng, Xiang Yang, Liuqing Li, Yuke Cheng, Xilin Ji, Fei |
| Affiliation | S China Univ Technol, Guangzhou 510641, Guangdong, Peoples R China. Peking Univ, Beijing 100871, Peoples R China. Colorado State Univ, Ft Collins, CO 80523 USA. Chinese Acad Sci, State Key Lab Management & Control Complex Syst, Inst Automat, Control Theory & Control Engn, Beijing 100864, Peoples R China. S China Univ Technol, Guangzhou 510641, Guangdong, Peoples R China. Cheng, X (reprint author), Peking Univ, Beijing 100871, Peoples R China. Yang, LQ Cheng, XL (reprint author), Colorado State Univ, Ft Collins, CO 80523 USA. Li, YK (reprint author), Chinese Acad Sci, State Key Lab Management & Control Complex Syst, Inst Automat, Control Theory & Control Engn, Beijing 100864, Peoples R China. |
| Keywords | SELF-CANCELLATION CHANNELS |
| Issue Date | 2016 |
| Publisher | IEEE COMMUNICATIONS MAGAZINE |
| Citation | IEEE COMMUNICATIONS MAGAZINE.2016,54(5),132-137. |
| Abstract | UWA channels exhibit time-varying multipath characteristics. To this end, OFDM is well known for its robustness against multipath channels but is prone to ICI induced by time variation. More recently, inspired by spatial modulation, the so-called IM-OFDM has also been proposed to provide higher system throughput than plain OFDM under certain conditions. A key feature of IM-OFDM is that partial subcarriers are kept inactive. This could potentially improve system performance in the presence of ICI. Leveraging on this, we are the first to propose IM-OFDM for UWA communications. On the other hand, however, we realize that ICI could potentially lead to energy leakage from active subcarriers to inactive ones, and impair the demodulation of IM-OFDM. In this article, we introduce IM-OFDM for UWA communications and propose a hybrid IM-OFDM scheme with improved spectral efficiency. We then review existing ICI self-cancellation techniques for generic OFDM, and propose a new ICI cancellation method for IM-OFDM. |
| URI | http://hdl.handle.net/20.500.11897/437340 |
| ISSN | 0163-6804 |
| DOI | 10.1109/MCOM.2016.7470947 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 待认领 |
