• Dr. Paresh M Dholakia
• Sanjay Kumar,
• Dr. Alpesh S Adeshara

The proposed work deals with the performance analysis of 4 × 4 Multiple Input Multiple Output (MIMO) wireless in uplink (UL) and 8 × 8 MIMO for downlink (DL) to achieve desire spectral efficiency for Long Term Evolution Advance (LTE-A), one of the candidate for International Mobile Telecommunication - Advance (IMT-A) for 4G. Spatial multiplexing is the key technology used in channel modeling for MIMO system. Spatial multiplexing of 4 × 4 and 8 × 8 MIMO is carried out using Singular Value Decomposition (SVD). To achieve higher Spectral Efficiency (i.e. Bits/sec/Hz)) this scheme employs the Waterfilling algorithm for improving the power allocation in all subcarriers/ channels. Due to more degree of freedom gain in MIMO system higher bit rate is possible and is achieved. The MIMO Channel model is established in Rayleigh, Nakagami and Rician fading environment. Results are discussed with comparative analysis of different fading models.

MIMO, Waterfilling Algorithm, Nakagami fading, SVD, Spatial Multiplexing, Spectral efficiency, LTE-A, IMT-A, Degree of freedom gain

"Performance Analysis of MIMO systems to achieve higher spectral efficiency in Nakagami fading environment", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.18-25, August-2018, Available :http://www.jetir.org/papers/JETIR1809A97.pdf

"Performance Analysis of MIMO systems to achieve higher spectral efficiency in Nakagami fading environment", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp18-25, August-2018, Available at : http://www.jetir.org/papers/JETIR1809A97.pdf