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Please use this identifier to cite or link to this item: http://hdl.handle.net/11133/1581

Title: 位相連続化QPSKを用いた大容量2Mビット/秒8Mチップ/秒携帯diffCDMAの提案とそのシステム容量
Other Titles: イソウレンゾクカ QPSK オモチイタ ダイヨウリョウ 2M ビット / ビョウ 8M チップ / ビョウ ケイタイ diffCDMA ノ テイアン ト ソノ  システム ヨウリョウ
Proposal of High Capacity 2 Mbps/8Mcps Phase Continuous Portable diffCDMA and Its System Capability
Authors: 岸, 政七
殷, 奎喜
岩田, 宏
天野, 裕
KISHI, Masahichi
YIN, Kuixi
IWATA, Hiroshi
AMANO, Yutaka
Issue Date: 30-Jun-1999
Publisher: 愛知工業大学
Abstract: From the frequency usage efficiency points of view, the novel CDMA with phase continuity QPSK is proposed in this paper to achieve such high reliability as shown in free space propagation, and is also discussed in system capability to get significant scheme for system design. Phase continuity is facilitated by substituting smoothing function over adjacent symbol fringes, in which the function touches current and next frame phase values with 0th order contact and varies with the steepest gradient just at the center. Simulations are verified to be error free to transmit 2 Mbps over 7.282 MHz bandwidth by employing diffCDMA with phase continuous QPSK without any compensations. The system configuration is also optimized through simulations to be defined by 11.651 MHz bandwidth, where the necessary Eb/No is -11.5 dB for error free in 2-rap Rayleigh fading environment of DUR=10 dB with 1 micro second delay over 2 GHz domain.
URI: http://hdl.handle.net/11133/1581
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