Adaptive internally turbo-coded ultra wideband-impulse radio (AITC-UWB-IR) system

Naotake Yamamoto, Tomoaki Ohtsuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

25 Citations (Scopus)

Abstract

As a new spread spectrum system, an Ultra Wideband-Impulse Radio (UWB-IR) has attracted much attention in high speed indoor multiple access radio communications [1]. Since the UWB-IR system repeats and transmits pulses for each bit, the UWB-IR system is considered as a coded scheme with a simple repetition block code. As an error correcting code, Turbo-codes proposed by C. Berrou et al. in 1993 [2] have attracted much attention beyond the field of coding theory, because the performance is very close to the Shannon limit with practical decoding complexity. In this paper, we propose an adaptive internally Turbo-coded UWB-IR (AITC-UWB-IR) system. The proposed system employs a Turbo code in addition to a repetition block code and shares the transmission bandwidth adaptively between them. We evaluate the performance of the AITC-UWB-IR by theoretical analysis and computer simulation. From our numerical and simulation results, we show that the BER of the AITC-UWB-IR is superior to that of the SOC-UWB-IR on an AWGN channel when the bit rate is high We also showed that the AITC-UWB-IR system using low rate Turbo codes improves the BER on an AWGN channel and a real Gaussian fading channel. Consequently, we confirm that for the same bit rate, we had better make the code rate of Turbo codes lower and make the number of repetitions of the repetition codes smaller to achieve the better BER.

Original languageEnglish
Title of host publicationIEEE International Conference on Communications
Pages3535-3539
Number of pages5
Volume5
Publication statusPublished - 2003
Externally publishedYes
Event2003 International Conference on Communications (ICC 2003) - Anchorage, AK, United States
Duration: 2003 May 112003 May 15

Other

Other2003 International Conference on Communications (ICC 2003)
CountryUnited States
CityAnchorage, AK
Period03/5/1103/5/15

Fingerprint

Radio systems
Ultra-wideband (UWB)
Turbo codes
Block codes
Radio communication
Fading channels
Decoding
Bandwidth
Computer simulation

ASJC Scopus subject areas

  • Media Technology

Cite this

Yamamoto, N., & Ohtsuki, T. (2003). Adaptive internally turbo-coded ultra wideband-impulse radio (AITC-UWB-IR) system. In IEEE International Conference on Communications (Vol. 5, pp. 3535-3539)

Adaptive internally turbo-coded ultra wideband-impulse radio (AITC-UWB-IR) system. / Yamamoto, Naotake; Ohtsuki, Tomoaki.

IEEE International Conference on Communications. Vol. 5 2003. p. 3535-3539.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yamamoto, N & Ohtsuki, T 2003, Adaptive internally turbo-coded ultra wideband-impulse radio (AITC-UWB-IR) system. in IEEE International Conference on Communications. vol. 5, pp. 3535-3539, 2003 International Conference on Communications (ICC 2003), Anchorage, AK, United States, 03/5/11.
Yamamoto N, Ohtsuki T. Adaptive internally turbo-coded ultra wideband-impulse radio (AITC-UWB-IR) system. In IEEE International Conference on Communications. Vol. 5. 2003. p. 3535-3539
Yamamoto, Naotake ; Ohtsuki, Tomoaki. / Adaptive internally turbo-coded ultra wideband-impulse radio (AITC-UWB-IR) system. IEEE International Conference on Communications. Vol. 5 2003. pp. 3535-3539
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