PAPR Reduction in OFDM Systems: Zadoff-Chu Matrix Transform Based Pre/Post-Coding Techniques

Baig, İmran; Jeoti, Varun

doi:10.1109/cicsyn.2010.34

Cited by 52 publications

(37 citation statements)

References 11 publications

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“…After each time and measurement update pair, the process is repeated with the previous a posteriori estimates used to project or predict the new a prior estimates [11], [12], [14].…”

Section: Channel Estimationmentioning

confidence: 99%

“…With the intention of solving the above problem with cost efficiency, we plan to incorporate the OSTBC, ZCT With the intention of reducing the PAPR in OFDM, the subcarriers signals are added through inverse fast Fourier transform (IFFT) operation which helps to increase the performance of high-power amplifier (HPA) at the transmitter [5,6] [7]. There are many techniques used to reduce the PAPR of MIMO-OFDM system that are Clipping and filtering [8], Partial transient sequence (PTS) [9], Selected mapping(SLM) [10], Zadoff-Chu transform (ZCT) [11]. Zadoff-Chu sequence provides constant amplitude output signal with optimum correlation properties and reducing the cost and complexity of output signal [12].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Channel Estimation Using EKF - ZCT Based Orthogonal STBC MIMO OFDM System

2017

International Journal of Research Studies in Computer Science a

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Multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM)transmission can improve both the transmission capacity and performance due to diversity gain. However, one of the major drawback of MIMO-OFDM have high peak-to average power ratio (PAPR) in order to the signals transmitted on different antennas. The transmitted bits must be channel-encoded as they are particularly critical to the performance of the considered OFDM system. Consequently, this channel encoding highly increases the system complexity and decreases the transmission data rate. These two problems are subjected to transmitter diversity that can overcome by incorporating orthogonal space-time block coded (OSTBC) and Zadoff-Chu Transform (ZCT) with the MIMO-OFDM. Moreover, the receiver diversity is can be improved using of Extended Kalman Filter (EKF). By enhancing the transmitter diversity and receiver diversity

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“…After each time and measurement update pair, the process is repeated with the previous a posteriori estimates used to project or predict the new a prior estimates [11], [12], [14].…”

Section: Channel Estimationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Channel Estimation Using EKF - ZCT Based Orthogonal STBC MIMO OFDM System

2017

International Journal of Research Studies in Computer Science a

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“…In [13],there can be proposed the ZCT(Zadoff -Chu matrix Tansform) precoded and postcoded metho d. It can be said that the proposed pre/postcoded OFDM systems introduce no PAPR or BER degradation. In addition, the ZCT precoding and postcoding based OFDM systems for PAPR reduction do not require any power increment, co mplex opt imization and side information to be sent for the receiver.…”

Section: B Peak To Average Power Ratio(papr)mentioning

confidence: 99%

Two Stage Precoding in Ofdm Based Cognitive Radio

2015

IJAERD

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“…Zadoff-Chu codes are the one of the distinct case of the generalized Chip-Like polyphase sequences that has optimal correlation properties [13] [14]. The Zadoff-Chu are complex-valued sequences, when these sequences are applied to the radio signal and gives an electromagnetic signal with constant amplitude.…”

Section: Zadoff-chu Matrix Transforms (Zct)mentioning

confidence: 99%