Diversity technique for multiple input multiple output orthogonal frequency division multiplexing (MIMO- OFDM) system using a new subcarrier mapping scheme
نویسندگان
چکیده
The objective of this research is to propose a new subcarrier mapping scheme intercarrier interference self cancellation intercarrier interference self cancellation (ICI-SC) technique using data allocation in space time frequency block codes (STFBC) multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) system. It aims to achieve maximum diversity order and to compensate integrated effect of frequency offset (FO) for intercarrier interference (ICI) reduction in the system. Using theoretical derivation of the pairwise error probability (PEP), a simulation model is then being used to compare with adjacent and symmetric subcarrier mapping scheme with FO. The results show that the ICI contained in the received signals can be effectively reduced using a new subcarrier mapping scheme. Thus, the proposed method is using STFBC outperforms existing subcarrier mapping schemes by approximately reducing the ICI with maximum diversity order in MIMO-OFDM system.
منابع مشابه
Mimo-ofdm for Arbitrary Multiplexing Rates Based Ondynamic Sub Carrier Mapping
Multiple-input multiple-output (MIMO) wireless technology in combination with the orthogonal frequencydivision multiplexing (MIMO-OFDM) is an attractive air interface solution for next-generation wireless local area networks (WLANs). Among the various resources in MIMO multicarrier systems the multiplexing rate assignment is related to the rate of transmissions. Here we proposed a new hybrid cy...
متن کاملMultiuser MIMO-OFDM systems using subcarrier hopping
Recently space division multiple access (SDMA) assisted multiple-input–multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems invoking multiuser detection (MUD) techniques have attracted substantial research interest, which is capable of exploiting both transmitter multiplexing gain and receiver diversity gain. A new scheme referred to here as slowsubcarrierhopping (SS...
متن کاملMultiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing in Fast Fading Channels
of the Dissertation Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing in Fast Fading Channels by Sungsoo Kim Doctor of Philosophy in Electrical Engineering University of California, Los Angeles, 2003 Professor Gregory J. Pottie, Chair The increased data rates and reliability required to support emerging multimedia applications require new communications technology. We pr...
متن کاملAdaptive codebook-based channel prediction and interpolation for multiuser multiple-input multiple-output-orthogonal frequency division multiplexing systems
In multiple-input multiple-output–orthogonal frequency division multiplexing (MIMO–OFDM) communications, the channel state information (CSI) of the forward link at each subcarrier is needed for precoder design at the transmitter to achieve the maximal diversity and/or multiplexing gains. In frequency division duplex (FDD) systems, the CSI needs to be estimated at the receivers and fed back to t...
متن کاملPAPR Reduction in SFBC MIMO OFDM System Using ACE Scheme
Increased data rates and reliability are the two key factors required to support emerging multimedia applications and new communications technologies. The two techniques used in high data rate transmission are orthogonal frequency division multiplexing (OFDM) and multiple-input multiple-output (MIMO) scheme. The OFDM is used to mitigate the problem of inter symbol interference (ISI) and provide...
متن کامل