Performance Improvement of OFDM Using Subcarrier Frequency Diversity
نویسندگان
چکیده
منابع مشابه
Performance Improvement of OFDM Using Subcarrier Frequency Diversity
Orthogonal Frequency Division Multiplexing is a key contender for broadcasting standards, due to its immunity towards multipath fading and ease of implementation. Here a novel scheme to exploit the frequency diversity within OFDM subcarriers has been proposed which further increases the bit error rate performance. The diversity is achieved by circularly shifting the OFDM subcarrier coefficients...
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 کاملDiversity technique for multiple input multiple output orthogonal frequency division multiplexing (MIMO- OFDM) system using a new subcarrier mapping scheme
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 com...
متن کاملOFDM Frequency Offset Estimator Using PN Sequences and Its Improvement
In this paper, we proposed two new frequency synchronization methods for orthogonal frequency division multiplexing (OFDM) system. They have large estimation range and acceptability precision in Rayleigh channel. One of the methods will not waste the system bandwidth because the training sequence is superimposed on the data of OFDM symbol. The performance of the two methods is better than that ...
متن کاملPerformance Improvement by Frequency-Domain Interleaving for OFDM/TDM Using MMSE-FDE in a Wireless Channel
The use of frequency-domain interleaving on a frame-byframe basis for orthogonal frequency division multiplexing (OFDM) combined with time division multiplexing (OFDM/TDM) is presented. In conventional OFDM, FDE is not designed to exploit the channel frequencyselectivity and consequently, the frequency diversity gain cannot be obtained. To further improve the bit error rate (BER) performance of...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IOSR Journal of Electronics and Communication Engineering
سال: 2012
ISSN: 2278-8735,2278-2834
DOI: 10.9790/2834-0434749