Adaptive Modulation/TDMA Scheme for Large Capacity Personal Multi-Media Communication Systems

Seiichi SAMPEI; Shozo KOMAKI; Norihiko MORINAGA

Adaptive Modulation/TDMA Scheme for Large Capacity Personal Multi-Media Communication Systems

Seiichi SAMPEI, Shozo KOMAKI, Norihiko MORINAGA

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This paper proposes an adaptive modulation/TDMA scheme to achieve high capacity personal multi-media communication systems. TDMA is employed to cope with various bit rate for multi-media services. The modulation scheme is selected from 1/4-rate QPSK, 1/2-rate QPSK, QPSK, 16QAM and 64QAM according to the received C/I_C (power ratio of the desired signal to the co-channel interference) and the delay spread. The spectral efficiency is evaluated by using the simulated bit error rate (BER) performance as well as the cumulative distribution of the C/I_C with parameters of cell configurations. The results show that the spectral efficiency of the proposed scheme is 3.5 times higher than that of the conventional QPSK systems at the outage probability of 10%, and the effect is more remarkable at lower outage probability. The results also show that the proposed adaptive modulation is effective in improving delay spread immunity.

Publication: IEICE TRANSACTIONS on Communications Vol.E77-B No.9 pp.1096-1103

Publication Date: 1994/09/25

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Type of Manuscript: Special Section PAPER (Special Issue on Mobile Multimedia Communications)

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Seiichi SAMPEI, Shozo KOMAKI, Norihiko MORINAGA, "Adaptive Modulation/TDMA Scheme for Large Capacity Personal Multi-Media Communication Systems" in IEICE TRANSACTIONS on Communications, vol. E77-B, no. 9, pp. 1096-1103, September 1994, doi: .
Abstract: This paper proposes an adaptive modulation/TDMA scheme to achieve high capacity personal multi-media communication systems. TDMA is employed to cope with various bit rate for multi-media services. The modulation scheme is selected from 1/4-rate QPSK, 1/2-rate QPSK, QPSK, 16QAM and 64QAM according to the received C/I_C (power ratio of the desired signal to the co-channel interference) and the delay spread. The spectral efficiency is evaluated by using the simulated bit error rate (BER) performance as well as the cumulative distribution of the C/I_C with parameters of cell configurations. The results show that the spectral efficiency of the proposed scheme is 3.5 times higher than that of the conventional QPSK systems at the outage probability of 10%, and the effect is more remarkable at lower outage probability. The results also show that the proposed adaptive modulation is effective in improving delay spread immunity.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e77-b_9_1096/_p

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@ARTICLE{e77-b_9_1096,
author={Seiichi SAMPEI, Shozo KOMAKI, Norihiko MORINAGA, },
journal={IEICE TRANSACTIONS on Communications},
title={Adaptive Modulation/TDMA Scheme for Large Capacity Personal Multi-Media Communication Systems},
year={1994},
volume={E77-B},
number={9},
pages={1096-1103},
abstract={This paper proposes an adaptive modulation/TDMA scheme to achieve high capacity personal multi-media communication systems. TDMA is employed to cope with various bit rate for multi-media services. The modulation scheme is selected from 1/4-rate QPSK, 1/2-rate QPSK, QPSK, 16QAM and 64QAM according to the received C/I_C (power ratio of the desired signal to the co-channel interference) and the delay spread. The spectral efficiency is evaluated by using the simulated bit error rate (BER) performance as well as the cumulative distribution of the C/I_C with parameters of cell configurations. The results show that the spectral efficiency of the proposed scheme is 3.5 times higher than that of the conventional QPSK systems at the outage probability of 10%, and the effect is more remarkable at lower outage probability. The results also show that the proposed adaptive modulation is effective in improving delay spread immunity.},
keywords={},
doi={},
ISSN={},
month={September},}

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TY - JOUR
TI - Adaptive Modulation/TDMA Scheme for Large Capacity Personal Multi-Media Communication Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 1096
EP - 1103
AU - Seiichi SAMPEI
AU - Shozo KOMAKI
AU - Norihiko MORINAGA
PY - 1994
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E77-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 1994
AB - This paper proposes an adaptive modulation/TDMA scheme to achieve high capacity personal multi-media communication systems. TDMA is employed to cope with various bit rate for multi-media services. The modulation scheme is selected from 1/4-rate QPSK, 1/2-rate QPSK, QPSK, 16QAM and 64QAM according to the received C/I_C (power ratio of the desired signal to the co-channel interference) and the delay spread. The spectral efficiency is evaluated by using the simulated bit error rate (BER) performance as well as the cumulative distribution of the C/I_C with parameters of cell configurations. The results show that the spectral efficiency of the proposed scheme is 3.5 times higher than that of the conventional QPSK systems at the outage probability of 10%, and the effect is more remarkable at lower outage probability. The results also show that the proposed adaptive modulation is effective in improving delay spread immunity.
ER -