With the tremendous growth in the field of communication, wireless system requires significantly higher spectral efficiency. The solution of this problem is MIMO Spatial Multiplexing (SM). In this paper we compare performance of different methods for decoding multiple input-multiple output (MIMO) transmission System incorporating VBLAST-SM, which includes sphere decoding (SD), zero forcing (ZF)...

In this paper, spatial modulation (SM) is introduced to layered division multiplexing (LDM) systems for enlarging the spectral efficiency over broadcasting transmission. Firstly, the SM aided LDM (SM-LDM) system is proposed, in which different layered services utilize SM for terrestrial broadcasting transmission with different power levels. Then a spectral efficiency (SE) analysis framework for...

Coherent light fidelity (LiFi) systems which uses coherent detection at the receiver are attracting more and interest as they provide many advantages over conventional intensity modulation / direct (IM/DD) LiFi systems. Recent efforts to boost performance of IM/DD include usage multiple-input-multiple-output (MIMO) technology, among spatial multiplexing (SMX) has gained certain attention. This ...

Multiple Active Antenna –Spatial Modulation (MA-SM) is a high rate, low complexity MIMO transmission scheme. It takes the advantage of low complexity of SM and high multiplexing gain of V-BLAST system. Here, the information bits are conveyed by both the constellation symbol and spatial symbol. To benefit the available multiplexing gain, active antennas could be any number not more than the numb...

Generalized frequency division multiplexing (GFDM) is considered a non-orthogonal waveform and known to encounter difficulties when using in the spatial multiplexing mode of multiple-input-multiple-output (MIMO) scenario. In this paper, a class of GFDM prototype filters, under which the GFDM system is free from inter-subcarrier interference, is investigated, enabling frequency-domain decoupling...

This paper applies transmit antenna selection algorithms to spatial-temporal combining-based spatial multiplexing (SM) ultrawideband (UWB) systems. The employed criterion is based on the largest minimum output signal-to-noise ratio of the multiplexed streams. It is shown via simulations that the bit error rate (BER) performance of the SM UWB systems based on the two-dimensional Rake receiver is...

Multiple Input Multiple Output (MIMO) systems are wireless systems with multiple antenna elements at both ends of the link. Wireless communication systems demand high data rate and spectral efficiency with increased reliability. MIMO systems have been popular techniques to achieve these goals because increased data rate is possible through spatial multiplexing scheme and diversity. Spatial Mult...

Adaptive power allocation (PA) algorithms based on opti6 mization of the minimum distance dmin between signal points at the 7 receiver side are investigated in spatial modulation (SM) systems. First, a 8 closed-form solution of the optimal maximum-dmin-aided PA algorithm is 9 derived in the case of two transmit antennas (TAs). Moreover, for a higher 10 number of TAs, we propose a numerical appr...

This paper presents a Multiple-Input Multiple-Output (MIMO) transmission scheme that combines the spatial modulation (SM) with MIMO spatial multiplexing technique. The SM uses NA number of active antennas to transmit the same symbol, the proposed MIMO model uses the NA number of active antennas to transmit different symbols at the same time to increases the spectral efficiency of the system. A ...

For upcoming 5G networks, new challenges are posed on the physical layer, which go beyond increased data rate. Generalized Frequency Division Multiplexing (GFDM) is proposed as a candidate waveform to combat these challenges. However, inherent self-interference between subcarriers of GFDM hinders the application of standard spatial multiplexing (SM) detection algorithms. We present an algorithm...