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DMA
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直接存取存储
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详细解释：
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以下为句子列表：
英文: A long time before I was born, my Grandma and grandpa moved into the house on Beechwood Avenue.
中文: 早在我出生以前，奶奶和爷爷搬到碧奇乌大道住。
更详细...
英文: A normal person would have run for it at this sight, but Great grandma stood there gaping at the spot where the man had dropped off.
中文: 看到了这一切，要是换做其他人肯定会马上跑过去看个究竟，但是曾祖母就站在那，瞠目结舌的看着那个人掉落的地方。
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英文: Aaron: My grandma lives in New Jersey. She doesn't have a swim pool.
中文: 我奶奶住在新泽西，她那儿没有游泳池。
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英文: Abstract -Under the constraints of integer bit allocation and the proportionality among the throughput of different users，a new subcarrier-power-integer bits allocation scheme is proposed to maximize the throughput of OFDMA systems，The performance of the
中文: 摘要－针对OFDMA系统，在整数比特分配及用户吞吐量公平分配的约束下，提出使系统吞吐量达到最大的有效无线资源优化方案，算法的仿真结果表明本文方法的有效性。
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英文: Abstract: In this paper,an orthogonal multicode wideband CDMA system modelincluding pilot channel based on chaos spreading sequences is given.Based on chaos sequences,with pilot channel inserted orthogonally,it is shown that the performance of the system
中文: 文摘:提出一种基于混沌序列含导频信号的宽带正交多码CDMA系统模型，利用混沌序列以及采用正交插入导频信号提高系统性能，并对此模型在衰落信道中的性能进行分析。
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