World Journal of Research and Review (WJRR) ISSN:2455-3956, Volume-5, Issue-4, October 2017 Pages 25-30 25 www.wjrr.org Abstract—Along with the passing time and recent technology, the advancement of information technology has been increased in the wireless technology. The common methods that are used in this wireless communication are MIMO (Multiple Input Multiple Output) and OFDM (Orthogonal Frequency Division Multiplexing). MIMO is a system stands for a couple antenna on the transmitter and receiver which are working on themultipath component. While OFDM (Orthogonal Frequency Division Multiplexing) is a transmission method using multicarrier technique, dividing spectrum frequency into a couple subcarrier. The combination of MIMO and OFDM results in a high-speed transfer data system. The Single RF has reduced the usage of RF Front-End into a bigger matrix size in the conventional MIMO system. This final project will discuss about the Single RF system of MIMO-OFDM with the V-BLAST (Vertical Bell Laboratories Space-Time) and MMSE (Minimum Mean Square Error) detectionwhich is used to remove ISI (Intersymbol Interference) combined with theTurbo Code,where theTurbo Encoder that lies on the transmitter side is also theTurbo Decoder in the receiver side. MIMO-OFDM utilizesthe Single RF (Radio Frequency) basis. The test on this final project will include a Single RF antenna on the MIMO-OFDM system, MIMO-OFDM with the V-BLAST detector and MMSE MIMO-OFDM with the Turbo Code, by using 64 QAM modulation. The expected result is the analysis performance of the Single RF on the MIMO-OFDM system using Turbo Code and V-BLAST MMSEDetection. The system will be shown on theBit Error Rate (BER) toward the Signal to Noise Ratio (SNR). Index Terms—MIMO, OFDM, V-BLAST, MMSE, SingleRF, Turbo Code, BER, SNR. I. INTRODUCTION Wireless communication technology has been increased significantly in the past few years and will be the most important role in our life. The demand on this wireless communication has exponentially increased, such as the connectivity needs, the various services, and the better quality. This development is able to help the network communication to work efficiently, easily, quickly, and cheaply. The common techniques that are used for the wireless system are MIMO (Multiple Input Multiple Output) and OFDM (Orthogonal Division Multiplexing). MIMO is a system of a couple of antenna in the transmitter and receiver I Gede Puja Astawa, Electrical Departement, PoliteknikElektronikaNegeri Surabaya, Indonesia RommyAditya Pratama, Electrical Departement, PoliteknikElektronikaNegeri Surabaya, Indonesia Aries Pratiarso, Electrical Departement, PoliteknikElektronikaNegeri Surabaya, Indonesia that works properly in the multipath component. Meanwhile, OFDM (Orthogonal Frequency Division Multiplexing) is a transmission method that utilizes the multicarriertechnique which divides frequency spectrum into a couple of subcarrier[1].To minimize the necessity of the big matrix size, a Single RF (Radio Frequency) used lies on the receiver side, single RF function [8]. In this paper, we will discuss about how the single RF technique on the MIMO-OFDM system with V-BLAST (Vertical Bell Laboratories space-time) and MMSE (Minimum Mean Square Error) detection is used to remove ISI (Intersymbol Interference). It is equipped with the Turbo Code MIMO-OFDM that utilizes a single RF (Radio Frequency), or usually called as front-end RF which functions to get more energy efficiency, also the 2x2 antenna Single RF as its data communication medium with WLAN 802.11n standard. The results of this system can be seen on BER curve toward SNR. II. SINGLE-RF ANTENNA IN MIMO-OFDM SYSTEM A. Multiple-Input Multiple-Output (MIMO) In a wireless communication system, the signal transmission will be the ravages of fading, so the system will decline in performance. The demands ofthe increased data rates and thewireless service communications system quality generate the emergence of a new technique to improve the channel.This can be achieved by using multi antenna as well as the better transmitter and receiver, as shown in Figure 1.This system is known as the Multiple Input Multiple Output (MIMO). Fig. 1 Conventional MIMO Scheme. The antenna receiver will receive the signals from the antenna transmitter that is multiplied by a matrix channel. In general, the received signal by the antenna receiver which is multiplied by the channel (h) can be formulated as in the equation Analysis of Single RF Performance on MIMO-OFDM System Using Turbo Code and V-BLAST MMSE Detection I Gede Puja Astawa, Rommy Aditya Pratama, Aries Pratiarso