A Robust Non-coherent Receiver for TR UWB with the Impact of Group Delay Ripple

Jin, Yongnu; Kwak, Kyung Sup

doi:10.1587/transcom.e95.b.1983

Cited by 4 publications

(3 citation statements)

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“…As [10], the statistical model of GDR in an UWB system can be described by the sum of N < ∞ Cosine functions as…”

Section: Signal and Ystem Modelmentioning

confidence: 99%

“…1, the DL is nonideal. The impact of the GDR of DL on the BER performance have been studied in [10], and for UWB system, due to the extremely short time duration of pulse waveforms, even a small timing error between the correct time and the time output by the non-ideal DL can dramatically degrade the system performance.…”

Section: The Designed Tr Uwb Transceiver Withmentioning

confidence: 99%

“…According to some studies [4]-[8], the designed DLs suffer from stochastic variation of group delay due to the insertion loss fluctuation of transmission line. And some papers [9] and our previous studies [10] have investigated the impact of the group delay error on TR UWB performance.In this paper, based on the mature design technology of current mirror circuit, a new TR UWB transceiver is proposed. Based on the IEEE 802.…”

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confidence: 99%

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A new design of transmitted reference UWB transceiver with non-ideal delay lines

Jin

Cui

Kwak

2015

2015 International Conference on Information and Communication Technology Convergence (ICTC)

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The effect of group delay ripple (GDR) of nonideal delay line (DL) causes an unexpected type of distortion in transmitted reference (TR) ultra wide bandwidth (UWB) systems. In this paper, we propose a new TR transceiver structure, where the GDR information of DL at the receiver is introduced into the transmitter to mitigate the performance error due to the GDR. Through Monte Carlo simulation, it is proved that this new designed transceiver can greatly reduce the impact of nonideal DL with GDR on the performance of TR UWB systems.Index Terms-Ultra wideband (UWB), delay line (DL), group delay ripple (GDR), bit error rate (BER). I. INTRODUCTIONTransmitted reference (TR) technique has been widely considered for ultra wide bandwidth (UWB) communications. The main reason is that TR, which relaxes the synchronization requirements of coherent receiver, has simple implementation and robust performance to the possible channel distortion on pulse shape. In TR system, the message and the reference signals are separated in time, and the time separation is usually realized by using a delay line (DL). In the most literatures [1]-[3], the DL is supposed to be ideal, but it is in fact impossible to design a DL with a perfect phase-frequency characteristic and this unavoidable phase distortion leads to a delay error on the delay time for different signal bandwidth. Therefore, the retardation of DL in the receiver end directly affect the bit error rate (BER) performance of the TR system. According to some studies [4]-[8], the designed DLs suffer from stochastic variation of group delay due to the insertion loss fluctuation of transmission line. And some papers [9] and our previous studies [10] have investigated the impact of the group delay error on TR UWB performance.In this paper, based on the mature design technology of current mirror circuit, a new TR UWB transceiver is proposed. Based on the IEEE 802. 15. 3a channels, the BER performance is investigated and the simulation results show that the new designed TR UWB transceiver is more robust than the conventional TR UWB receiver under a non-ideal DL.The rest of the paper is organized as follows. Section II presents the signal and system model. In Section III, based on the idea of current mirror circuit, the new TR transceiver is designed, and through Monte Carlo simulations, the BER performance comparison of the new transceiver to that of conventional TR receiver under non-ideal DL conditions is provided in Section IV. Finally, we summarize the conclusions of this paper in Section V.

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“…As [10], the statistical model of GDR in an UWB system can be described by the sum of N < ∞ Cosine functions as…”

Section: Signal and Ystem Modelmentioning

confidence: 99%

Section: The Designed Tr Uwb Transceiver Withmentioning

confidence: 99%

mentioning

confidence: 99%

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