Название: Index Modulation for 5G Wireless Communications Автор: Miaowen Wen, Xiang Cheng, Liuqing Yang
Издательство: Springer
Серия: Wireless Networks
ISBN: 3319513540
Год: 2017
Страниц: 166
Язык: английский
Формат: epub, pdf
Размер: 10.88 MB
The explosive increase of mobile data services and the use of smart phones require the fifth generation (5G) network to support higher spectral efficiency, higher energy efficiency, and higher mobility. The currently employed modulation techniques based on the multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) paradigm unfortunately fail to satisfy this requirement. The MIMO modulation achieves high spectral efficiency for a configuration of massive antennas, but brings about unsatisfactory energy efficiency due to scalable power consumption of radio frequency (RF) chains. The OFDM modulation is prone to intercarrier interference caused by Doppler effects and suffers from high peak-to-average power ratio (PAPR). New groundbreaking modulation technologies are therefore very demanding. The recently emerging index modulation techniques provide a breakthrough to the bottleneck. Index modulation refers to a family of modulation techniques that rely on the indices of some medium to convey additional information. The medium can be either practical such as antenna, subcarrier, and frequency carrier, or virtual such as time slot, space-time matrix, and antenna activation order. Unlike conventional modulation techniques, the information carried by index modulation is embedded into the actual transmitted signal, consuming little or even no power.
This book presents a thorough examination of index modulation, an emerging 5G modulation technique. It includes representative transmitter and receiver design, optimization, and performance analysis of index modulation in various domains. First, the basic spatial modulation system for the spatial domain is introduced. Then, the development of a generalized pre-coding aided quadrature spatial modulation system as well as a virtual spatial modulation system are presented. For the space-time domain, a range of differential spatial modulation systems are examined, along with the pre-coding design. Both basic and enhanced index modulated OFDM systems for the frequency domain are discussed, focusing on the verification of their strong capabilities in inter-carrier interference mitigation. Finally, key open problems are highlighted and future research directions are considered.
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