抄録
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.
| 元の言語 | English |
|---|---|
| ホスト出版物のタイトル | IEEE International Conference on Communications |
| ページ | 3535-3539 |
| ページ数 | 5 |
| 巻 | 5 |
| 出版物ステータス | Published - 2003 |
| 外部発表 | Yes |
| イベント | 2003 International Conference on Communications (ICC 2003) - Anchorage, AK, United States 継続期間: 2003 5 11 → 2003 5 15 |
Other
| Other | 2003 International Conference on Communications (ICC 2003) |
|---|---|
| 国 | United States |
| 市 | Anchorage, AK |
| 期間 | 03/5/11 → 03/5/15 |
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ASJC Scopus subject areas
- Media Technology
これを引用
Adaptive internally turbo-coded ultra wideband-impulse radio (AITC-UWB-IR) system. / Yamamoto, Naotake; Ohtsuki, Tomoaki.
IEEE International Conference on Communications. 巻 5 2003. p. 3535-3539.研究成果: Conference contribution
}
TY - GEN
T1 - Adaptive internally turbo-coded ultra wideband-impulse radio (AITC-UWB-IR) system
AU - Yamamoto, Naotake
AU - Ohtsuki, Tomoaki
PY - 2003
Y1 - 2003
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0037591070&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037591070&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0037591070
VL - 5
SP - 3535
EP - 3539
BT - IEEE International Conference on Communications
ER -