5,532 research outputs found
Transceiver Design for GFDM with Index Modulation in Multi-user Networks
Index modulation (IM) techniques can be applied
to the different media in order to achieve spectral- and energyefficient
communication as well as to the indices of the subcarriers
of a generalized frequency division multiplexing (GFDM) data
block. In this work, a novel transceiver architecture for multiuser
GFDM-IM system is introduced. The performance of the
GFDM-IM is studied by considering the bit error rate (BER) as
performance metric. It is shown that better BER performance
than the classical GFDM and the orthogonal frequency division
multiplexing (OFDM) with IM can be achieved by employing IM
to the GFDM
Design guidelines for spatial modulation
A new class of low-complexity, yet energyefficient Multiple-Input Multiple-Output (MIMO) transmission techniques, namely the family of Spatial Modulation (SM) aided MIMOs (SM-MIMO) has emerged. These systems are capable of exploiting the spatial dimensions (i.e. the antenna indices) as an additional dimension invoked for transmitting information, apart from the traditional Amplitude and Phase Modulation (APM). SM is capable of efficiently operating in diverse MIMO configurations in the context of future communication systems. It constitutes a promising transmission candidate for large-scale MIMO design and for the indoor optical wireless communication whilst relying on a single-Radio Frequency (RF) chain. Moreover, SM may also be viewed as an entirely new hybrid modulation scheme, which is still in its infancy. This paper aims for providing a general survey of the SM design framework as well as of its intrinsic limits. In particular, we focus our attention on the associated transceiver design, on spatial constellation optimization, on link adaptation techniques, on distributed/ cooperative protocol design issues, and on their meritorious variants
- …