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International Journal of Wireless and Microwave Technologies(IJWMT)

ISSN: 2076-1449 (Print), ISSN: 2076-9539 (Online)

Published By: MECS Press

IJWMT Vol.4, No.4, Nov. 2014

BER Analysis with Adaptive Modulation Coding in MIMO-OFDM for WiMAX using GNU Radio

Full Text (PDF, 767KB), PP.20-34


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Author(s)

B. Siva Kumar Reddy, B. Lakshmi

Index Terms

AMC;GNU Radio;MIMO-OFDM;STBC;OSTBC;USRP N210;WiMAX

Abstract

This paper explores how MIMO increases channel capacity and how the fundamental characteristics of a MIMO system can create significant test challenges. Spatial modulation (SM) is the latest developed modulation method in the field of communication. The latest research on this shows that SM is useful to achieve the multiplexing gain for the single antenna system, this avoids the inter-channel interference but the spatial modulation is inherently unable to get transmit-diversity. In other words, SM is a novel modulation technique which combines the high multiplexing gain provided by the spatial modulation and transmit-diversity gain, given by the space time block codes (STBCs) technology. Different space-time block coding (STBC) schemes including Alamouti’s STBC for 2 transmit antennas as well as orthogonal STBC (OSTBC) for 3 and 4 transmit antennas are explored. The result of using these MIMO techniques is higher data rate or longer transmit range without requiring additional bandwidth or transmit power. This paper presents a detailed study of diversity coding for MIMO systems. In addition, adaptive modulation and coding (AMC) technique in conjunction with MIMO techniques constitute a technological breakthrough that greatly helps in satisfying the ever increasing demands of wireless networks. This paper presents a performance study of Mobile WiMAX networks based on MIMO and AMC perspectives. It also describes how to implement WiMAX PHY with MIMO on software defined radio (SDR) experimental setup with the help of USRP N210 as hardware and GNU Radio as software platforms.

Cite This Paper

B. Siva Kumar Reddy, B. Lakshmi,"BER Analysis with Adaptive Modulation Coding in MIMO-OFDM for WiMAX using GNU Radio", IJWMT, vol.4, no.4, pp.20-34, 2014.DOI: 10.5815/ijwmt.2014.04.02

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