Performance analysis of multistage interference cancellation for asynchronous TH-UWB systems in multipath fading channels

Seungyoup Han, Eunsung Oh, Myeongsu Han, Choongchae Woo, Daesik Hong

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this paper, we present an accurate analytical method for an asynchronous time-hopping (TH) ultrawideband (UWB) system using multistage interference cancellation (MIC) in multipath fading channels. To model the asynchronous transmission, we first investigate the chip-asynchronous case and extend the results of chip-asynchronous transmission into completely asynchronous transmission as a more general environment. Specifically, the approximate closed-form expression is derived for numerically calculating the average bit-error probability (BEP) of the MIC receivers, which are based on the hard-decision (HD) and soft-decision (SD) detections, respectively. In performing the analysis, the effect of multiple-access interference (MAI) is modeled as a Gaussian process. The results of an interference cancellation (IC) receiver as a function of the ratio between the two types of processing gain-1) pulse combining gain Ns and 2) pulse spreading gain Nc-are analyzed and compared under the constraint that the total processing gain of the system is large and fixed. To build up intuitive knowledge, some remarks on the analytic results are presented to describe the design criterion for the interference suppression. In numerical results, the theoretical analysis is verified via comparison with simulation results in terms of the number of IC stages, the set of cancellation parameters, and the number of users.

Original languageEnglish
Pages (from-to)1177-1189
Number of pages13
JournalIEEE Transactions on Vehicular Technology
Volume58
Issue number3
DOIs
Publication statusPublished - 2009 Apr 14

Fingerprint

Interference Cancellation
Multipath fading
Multipath
Fading Channels
Ultra-wideband (UWB)
Fading channels
Performance Analysis
Interference suppression
Multiple access interference
Processing
Chip
Receiver
Interference Suppression
Multiple Access Interference
Error Probability
Cancellation
Gaussian Process
Analytical Methods
Intuitive
Theoretical Analysis

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Aerospace Engineering
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

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abstract = "In this paper, we present an accurate analytical method for an asynchronous time-hopping (TH) ultrawideband (UWB) system using multistage interference cancellation (MIC) in multipath fading channels. To model the asynchronous transmission, we first investigate the chip-asynchronous case and extend the results of chip-asynchronous transmission into completely asynchronous transmission as a more general environment. Specifically, the approximate closed-form expression is derived for numerically calculating the average bit-error probability (BEP) of the MIC receivers, which are based on the hard-decision (HD) and soft-decision (SD) detections, respectively. In performing the analysis, the effect of multiple-access interference (MAI) is modeled as a Gaussian process. The results of an interference cancellation (IC) receiver as a function of the ratio between the two types of processing gain-1) pulse combining gain Ns and 2) pulse spreading gain Nc-are analyzed and compared under the constraint that the total processing gain of the system is large and fixed. To build up intuitive knowledge, some remarks on the analytic results are presented to describe the design criterion for the interference suppression. In numerical results, the theoretical analysis is verified via comparison with simulation results in terms of the number of IC stages, the set of cancellation parameters, and the number of users.",
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Performance analysis of multistage interference cancellation for asynchronous TH-UWB systems in multipath fading channels. / Han, Seungyoup; Oh, Eunsung; Han, Myeongsu; Woo, Choongchae; Hong, Daesik.

In: IEEE Transactions on Vehicular Technology, Vol. 58, No. 3, 14.04.2009, p. 1177-1189.

Research output: Contribution to journalArticle

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