Encoding sequence design for a reduced complexity time synchronization approach for OFDM systems

2012 ◽  
Author(s):  
Leila Nasraoui ◽  
Leila Najjar Atallah ◽  
Mohamed Siala
Keyword(s):  
Time Synchronization ◽  
Ofdm Systems ◽  
Sequence Design ◽  
Reduced Complexity

Optimal pilot sequence design for channel estimation in MIMO OFDM systems

2006 ◽  
Vol 10 (1) ◽  
pp. 1-3 ◽  
Author(s):  
Die Hu ◽  
Luxi Yang ◽  
Yuhui Shi ◽  
Lianghua He
Keyword(s):  
Channel Estimation ◽  
Ofdm Systems ◽  
Sequence Design ◽  
Mimo Ofdm

scholarly journals AN EFFICIENT METHOD FOR PAPR REDUCTION IN OFDM SYSTEMS WITH REDUCED COMPLEXITY

2013 ◽  
pp. 96-100
Author(s):  
PRITANJALI KUMARI ◽  
US TRIAR
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Average Power ◽  
High Peak ◽  
Papr Reduction ◽  
Power Calculation ◽  
Frequency Division Multiplexing ◽  
Power Ratio ◽  
Frequency Division ◽  
Ofdm Systems ◽  
Reduced Complexity

Orthogonal Frequency Division Multiplexing (OFDM), widely used in digital wireless communication, has a major drawback of high Peak to Average Power Ratio (PAPR). A reduced complexity partial transmit sequence (PTS) scheme has been proposed to solve high peak to average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) system. In the proposed PTS scheme, a function is generated by summing the power of time domain samples at time ‘n’ in each sub blocks, known as “Hn”.Only those samples, having Hn greater than or equal to a preset threshold value (αT) are used for peak power calculation during the process of selecting a candidate signal with the lowest PAPR for transmission. As compared to conventional PTS scheme, the proposed scheme achieves almost the same PAPR reduction performance with much lower computational complexity.

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