International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 05 | May -2017
p-ISSN: 2395-0072
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REVIEW OF MASSIVE MIMO, FILTER BANK MULTI CARRIER AND ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING Kamurthi Ravi Teja1, Shakti Raj Chopra2* 1,2Department
of Electronics and Communication Engineering Lovely Professional University Phagwara, Punjab, India-144411 2Corresponding Author --------------------------------------------------------------------------***-----------------------------------------------------------------
Abstract - This paper introduces about the importance
Transform).The use of FBMC (Filter Bank Multi Carrier) is to overcome some of the short comings in Orthogonal Frequency Division Multiplexing. That I discussed in differences between OFDM and FBMC section. Before discussing with the Massive MIMO, we should know about the MIMO and its use.
of Massive MIMO and Filter Bank Multi Carrier (FBMC). It also points out the differences between Orthogonal Frequency Division Multiplexing (OFDM) and Filter Bank Multi Carrier (FBMC). OFDM, which I introduced in the paper, require the use of “Cyclic Prefix” to avoid Inter Symbol Interference (ISI) and convert the channel to sub channel carriers. In Filter Bank Multi Carrier (FBMC), cyclic prefix is not used which helps in increases the bandwidth efficiency. It also explains about the short comings which are encountered in Orthogonal Frequency Division Multiplexing (OFDM). This paper gives the brief description about the MIMO technology and its types.
2. LITERATURE REVIEW 2.1 MIMO TECHNOLOGY This is the key technology in 3G/4G/5G technologies. MIMO stands for Multiple Input Multiple Output. Multiple input means multiple transmitting antennas and Multiple output means Multiple Receiving antennas. The combination of these two is known as MIMO. In the forthcoming 5G technology, MIMO is used. Because of spectral efficiency improvisation factor, Spatial multiplexing and interference reduction. MIMO is having the special property that is high data rate transmission. In spatial multiplexing, a signal having high data rate is divided into many small signals to transmit from different antennas. MIMO can also be used as wired communication also. The best example is Power Line Communication. Single Input Single Output (SISO), Single Input Multiple Output (SIMO) and Multiple Input Single Output (MISO) are the types which were shown in the figure1. Multiple Input Single Output (MISO) are used to minimize errors and optimize data speed. Here, multiple antennas are used at the source or transmitter side, but at the receiver side only one antenna is used. In Single Input Single Output (SISO), only one antenna and one receiver antenna is used. However here the channel performance is limited. The best advantage in SISO is its simplicity. In Single Input Multiple Output (SIMO), only one antenna is used at the transmitter side and many receiving antennas at the receiving side. In wireless communication system SIMO is always used to reduce the effects of fading.
Key words: MIMO, Massive MIMO, OFDM, FBMC, ISI and 5th Generation mobile technology.
1. INTRODUCTION Massive MIMO is the new advanced technology in 5th Generation mobile network to achieve high data rates. It mainly focuses on advanced techniques for higher spectral efficiency. We know that the 4Th Generation mobile communication technology 4G, is still facing high energy consumption and spectrum crisis. So, in order to achieve that higher data rate, many researches were still being going on. We have OFDM (Orthogonal Frequency Division Multiplexing) and FBMC (Filter Bank Multi Carrier) techniques to achieve that higher data rate and spectral efficiency. But we have some major differences in both techniques. I discuss that part in the below paragraphs. Orthogonal Frequency Division Multiplexing is a method which is having high capacity and it is having the special property, i.e. Robustness. Both would fight against Interference. One more interesting fact in the damage of communication system are Fading and Multipath delay. These really damages the communication system. When the Fading and Multipath delays are occurring during communication we can see the extreme fading and Inter symbol Interference (ISI) occurs at the Receiver side. In order to rectify these, then came OFDM. In order to get rid of from the signal overlapping, we are using FFT (Fast Fourier Transform) and IFFT (Inverse Fast Fourier
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