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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。

This paper primarily used methods of Historical Citation and Statistic Data Analysis discussed investment environment of Shanghai new economy area, and made case study of Pudong New Area, intending to use related investment and regional development theories such as international production eclectic theory, regional economy gradient transfer theory, growth pole theory, to inspect effect of new economy area investment environment change on metropolitan development.

本文主要透过历史文献分析与统计资料分析方法，探讨上海新经济区的投资环境，并以浦东新区作为个案分析，期望藉由国际生产折衷理论、区域经济梯度转移理论、成长极理论等相关投资与区域发展理论，来观察新经济区投资环境变化对都市发展的作用。归纳研究发现，主要有下列几点：1。

In order to improve the characterization of polys further, and fulfill the requirement of some extreme environment like the high temperature and irradiation environment, it is made them to take place crosslinking reaction.

为进一步提高聚芳醚酮类聚合物的性能，满足某些特殊情况下的使用要求，可考虑对它们进行交联。

Residential area and the surrounding environment of the courtyard, plazas, and green landscape of the matching, such as construction, to create harmony between man and nature co-ordination of the best living environment provided a good basis for the conditions.

居住区和周围环境的庭院，广场，和绿色景观的匹配，如建设，创造人与自然的和谐协调，最好的生活环境提供了良好的基础条件。

At the same time, as a result of lacking correct plan channel, the planers , architects, landscape designers and sculpture maker s each design and create as themselves,it cause the design of urban environment is mixed and disorderly,there is not integral and concordant beauty in urban sculpture and urban space, through analyzing urban space environment, this paper discussed the fundamental of urban sculpture...

同时，由于缺乏正确的规划引导，规划师、建筑师、景观设计师、雕塑家各自进行设计与创作，造成城市环境设计无序的状态，城市雕塑和城市空间环境不能形成整体和谐之美，论文通过对城市空间环境的分析，探讨城市雕塑创作的原则。

The environment functions as a stimulus that triggers and activates the pre-equipment UG to process the materials provided by the linguistic environment around the children.

环境的功能起刺激作用，它出发和即或先天具备的UG来处理由儿童周围的语言环境所提供的材料。

Downhole pressure-testing instrument can be calibrated in the environment simulated by it, preventing the decline of the precision brought by the difference between the environment used and calibrated.

该系统能模拟石油井下高温高压的测试环境，并在该环境下对测压器进行动态校准，从而避免了实验环境与校准环境不同引起的精度差异。

In his professional life more than 60 years , he studies from architecture to urban planning, region, and settlement environment, and wins extraordinary honor with two magnum opuses, Generalized Architecture and Introduction of Settlement Environment Science.

他在60多年专业生涯中，从建筑走向城市规划、走向区域、走向人居环境研究，以《广义建筑学》和《人居环境科学导论》两部巨著，嬴得了非常的荣誉。

With the development of industrialization, a large number of industry offals have discharged into the environment without being treated which caused great pollution to the natural environment.

随著工业化的快速发展，大量工业废弃物的无达标排放到环境中，造成了环境污染。

The problem that the new high-tech Industry Cluster exists in developing has: The policy that the government develops the new high-tech industry is divorced from economy development environment; The result of gathering of the new high-tech industry is not obvious, the relation is not strong that the industry and the technology of enterprise and organization in the new high-tech industrial development zone; The phenomenon which resembles in industrial structure is very serious; The new high-tech Industry Cluster lacks the good innovative environment; The production, study, research of the scientific and technical result is divorced from market; The high-tech talent

高新技术产业集群发展中存在的问题有：政府发展高新技术产业的政策与经济发展环境相脱节；高新技术产业

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了