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The paper investigates both block-type pilot linear minimum mean square error algorithm and IEEE802.16 OFDM channel estimation analysis. Simulation results confirm the block-type pilot structure is more suitable for IEEE802.16 system. An optimal pilot setting algorithm, based on space frequency domain, is explored and the pilot chart is presented. The proposed algorithm finds its application in MIMO-OFDM. Simulation results show the algorithm presents a good approximation to the perfect channel state information curve, with about 2dB difference in SNR. The simulation results also demonstrate the algorithm achieves fairly high stability in the environment of fast fading, performance of the proposed algorithm is better that of pilot training channel estimation.3. Taking into account the characteristics of IEEE802.16 OFDM system, OFDM system simulation platform is constructed in Matlab, exploiting simulink as a tool. OFDM modulation and demodulation simulation system are configured on LabVIEW platform. All the system signal processing is simulated, including defining system parameters, designing modulation model, and verifying all the proposed algorithms under different environments, such as white Gaussian noise, multi-path fading, with or without guard interval etc. Bit error performance is evaluated. The research provides valid theoretical basis for practical OFDM system performance evaluation.4. Taking advantage of software radio, the paper designs a hardware platform with both 256-IFFT/FFT and 512-IFFT/FFT OFDM schemes co-existing in one platform. You can predetermine one from the two schemes to carry out almost the same model function with different system performance and parameter setting.5. Referring to IEEE802.16 standard, the paper proposes a design method for generating signals and frames suitable for laboratory investigations implemented in laboratory environment.6. Based on 6701evm digital evaluation card, combined with analogy front-end, the paper designs a DSP software model to deal with baseband signal processing. An overall OFDM scheme, with modulation and demodulation function, is accomplished.

讨论分析了MIMO-OFDM中一种基于空频域的最优导频设置算法，给出了导频图案，通过仿真实验表明，该算法与理想的信道状态信息曲线非常接近，信噪比差距约在2dB左右，并且在快衰落条件下具有较好的稳定性，其性能要优于基于前导训练的信道估计方法。3、根据IEEE802.16OFDM系统特点，论文分别在Matlab中应用Simulink工具构建OFDM系统仿真平台、在LabVIEW平台上实现了OFDM调制解调仿真系统，模拟了整个系统的信号流程，进行了OFDM仿真系统参数的选择和调制模块的仿真设计、论证各算法性能，并根据各种不同的条件：例如高斯噪声、多径衰落、有无保护间隔等，对系统的误码特性进行了评估，为正确评价实际OFDM系统的性能提供了有效的理论依据。4、论文以软件无线电思想作为指导，提出了以256点IFFT／FFT为核心和以512点IFFT／FFT为核心的两种OFDM算法模式并存于同一个硬件平台、且可预选的方案，它们在参数选取和性能指标上有所差异，均实现了相似的模块和功能。5、论文参考IEEE 802.16无线网络标准的参数设置，针对本设计系统的应用环境和系统硬件的性能速率，提出了一种应用于实验室环境的信号结构、帧格式等参数设计。6、论文基于TI公司的6701evm数字评估板卡，结合模拟前端搭建数字中频平台，设计了基带处理的DSP软件模块并进行系统调试，基本实现了一套完整的OFDM调制解调方案。

The cut-off valve with pilot valve without hand wheel, stem and lift nut inside will guide block and guide slot Butterfly Valves to guide sleeve, the disc-shaped disc to disc type bowl shape, and holes in the bottom of the flap valve to open, the valve cover of the original valve stem hole to hole diversion, because of increased pressure ring, ring, and the valve flap to class mortar, so that the flow passage separated the upper chamber cavity, external cavity, cavity, in the cavity and The external cavity increases with draft tube and stainless steel manual ball valve, flap valve in the cover plate and the center of the end of installing the spring, the upper flap valve install compression seal of the pressure ring, outside the cavity of the wall to open a Drainage holes.

带先导球阀的截止阀无手轮、阀杆和内升降螺母，将导向块与导向槽改为导向套，将盘形阀瓣改为类钵体形阀瓣，并在底部开阀瓣孔，电动蝶阀将阀盖原阀杆孔改为导流孔，因增加压环、密封圈和将阀瓣改为类钵体，使上通流腔分隔为上腔、外腔、内腔，在上腔与外腔的外部加设有导流管与不锈钢手动球阀，在盖板与阀瓣底的中心部加设弹簧，阀瓣上部加设压紧密封圈的压环，在外腔的壁上开有放水孔。

Then the adults went oversummering and overwintering. In spring rapeseed region, adults came out from late April to mid-May. Then they mated and laid eggs until the end of May. After a period of activity, most of them hibernated directly without oversummering for cool climate after pupas becoming adults.

在春油菜区，油菜茎象甲成虫于4月下旬至5月上中旬出土活动，5月中下旬交尾产卵，其蛹羽化为成虫后因气候冷凉大多不经过越夏，而是活动一段时期后直接越冬。

In this paper,Restricted Minimum Disturbance Map based scheme of attitude control is presented to keep the attitude of the base fixed during the movement of the manipulator via planning motion trajectory of the end-effector of manipulator without using reaction wheel or reaction thruster.

这种方案不使用反作用轮或反作用喷气装置，而通过规划机械手末端的运动轨迹，使机器人的本体姿态在机械手动作过程中基本保持不变。

End by the artful hermes,but not before he had suffered all the humiliations.he was as thoughtless as he was unkind .a son of poseidon's,attempting to kidnap his daughter,made the war-god unhappy,so that he killed the youth without he sitation.in retaliation,poseidon dragged him before a group of athenian judges for trial.the court was held on a hill outside athens.ares presented his case and was declared innocent .

波塞冬的一个儿子企图诱拐他的女儿，弄得战神非常不悦。于是，他毫不留情地把他干掉了。为了替儿子报仇，波塞冬拉着阿瑞斯到雅典法官面前要求审判战神。审判是在城外的一座小山上开庭的，阿瑞斯叙述了案情，最后被判无罪。

He is unaware that this highly dramatic situation would instantly come to a banal and unexciting end if were to quit the field and let a second woman carry on the battle (his wife, for instance, if she herself is not the fiery war horse) This sound idea seldom or never occurs to him, because no man can converse with an animus for five minutes without becom ing the victim of his own anima.

他没有意识到，如果离开这个战场并让另一个女人接着战斗（比如他的妻子，假如她自己不是一匹暴躁的战马），这种高度戏剧化的情形将会立刻到达一个平凡而乏味的结局。这种高明的想法很少或从没有出现在他身上，因为没有男人可以和一个阿尼姆斯交谈五分钟以上而不沦为他自身阿妮玛的牺牲品。

When facing pressure, some people sigh in distress at their wit's end, their once lofty aspirations and tenacious willingness to struggle vanishing without a trace like mist and smoke.

面对压力，有的人唉声叹气、束手无策，曾经有过的雄心壮志、顽强拼搏慢慢变得烟消云散、无影无踪；有的人抱怨时运不济、生不逢时，曾经展现的意气风发、运筹帷幄渐渐让位给得过且过、随遇而安；还有的人悲天悯人、破罐破摔，最后落魄得放浪形骸、借酒浇愁

It cruises freeways without choppy ride of a Nissan Murano. The inside is spacious in the two-row class, and the turbo four makes speed smoothly and with surprisingly low-end wallop.

车内的两排座位提供了宽裕的乘坐空间，四缸涡轮增压使加速非常平稳，以及在低档时令人惊讶的爆发力。

Although it is impossible to gauge Tibetan Cabinets tibetan furniture Tie rod end precisely the numbers of children suffering abuse, often without either their school authorities or other services knowing the truth of their circumstances, one study found one in six young British adults reported at least one serious abusive incident in their childhoods.

尽管目前尚无法准确测算出受虐待孩子的人数，无论是学校还是其它社会服务机构都无法弄清他们所处的真实环境，但有一项研究发现，在较为年轻的英国成年人中有六分之一的人表示他们在自己的青少年时期至少经历过一次较为严重的虐待事件。

British a railway car at the end of the train; it can be detached without stopping the train .

在火车末尾的铁道车；不用停下火车就可以分离下来。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。