modulation technique造句

• Preparation of multidimensional holographic modulation technique
  调制板制作新技术
• One way to construct this system base on single - carrier modulation technique
  建立该系统的一种方式是基于单载波调制技术。
• From the analyzing , there is 3 db envelope fluctuation of this modulation technique
  通过分析，得到这种调制方式的已调波包络仍有3db起伏。
• An adaptive modulation technique for multiuser mimo systems with multiuser diversity is proposed
  摘要提出一种在mimo系统中采用自适应调制实现可变速率多用户分集的方案。
• Orthogonal frequency division multiplexing ( ofdm ) is a suitable digital modulation technique for broadband systems
  正交频分复用( ofdm )技术是一种适用于宽带系统的多载波数字调制技术。
• Orthogonal frequency division multiplexing is an effective multi - carrier modulation technique , in which synchronization is one the key ingredients
  而同步技术是ofdm系统实现的关键技术之一。
• Simulation and experimental results demonstrate the validity of the time - discrete modulation technique and the feasibility of the control approach
  数字仿真和实验结果验证了时间离散调制技术的正确性和控制方法的可行性。
• With the “ skip ” modulation technique , quiescent current are reduced to a minimized value of 1ma with full load , 60ua with no load , and less than 0 . 01ua in shutdown mode
  在典型情况下,芯片满载时的静态电流为1ma ,空载时的静态电流仅为60ua ,关断电流小于0 . 01ua 。
• Chapter 2 discusses the modulation and demodulation theory and the principle of pll ( phase locked loop ) from the general communication theory to several modern modulation techniques
  从通信传输的一般原理到几种具体的现代调制技术，并针对dvb - s接收芯片简要叙述了qpsk的解调原理。
• Coded modulation technique is a hot issue in code field in recent 20 years . it appeared in 1982 when ungerboeck proposed tcm theory . and then it apply widely soon
  编码调制是近二十年来编码界的一大热点,它的出现是以ungerboeck在1982年提出网格编码调制( tcm , trelliscodedmodulation )理论为标志。
• Coded modulation technique is a way that combines coding technique with modulation technique to get coding gain in the instance of keeping the power efficiency and frequency efficiency but increasing the complexity of equipment
  解决这一问题的一种有效方法是利用交织技术与编码调制相结合,以此获得在衰落信道下性能的提高。
• Based on the output - voltage error function , a novel time discrete modulation technique is proposed for matrix converters ( mcs ) and time - discrete difference equations of a mc circuit are derived
  摘要针对矩阵变换器调制方式的特点，提出了基于输出电压误差函数分析的矩阵变换器离散调制技术，推导了基于时间离散和差分原理的电路方程。
• The channel of satellite communication is described to be the typical band - limited and non - linear channel . based on its special characteristic , we have the principles to select a type of modulation techniques for satellite communication systems
  本文对带限和非线性的卫星信道作了描述，在此基础上得出卫星通信中选择调制技术的准则和依据。
• Dual randomized modulation technique is more effective than existing simple random modulation schemes , such as random position modulation or random switching frequency modulation , in dispersing the power spectrum
  与已经存在的任何一种单随机方案相比，双随机调制技术驱散谐波能量而使之具有更宽的带宽，能更加有效地减少功率变换器系统的离散谱峰值。
• In chapter 2 the principle of modulation techniques and channel equalization are introduced . simulation results are presented to illuminate the characters of gmsk modulation signal . then the channel equalization problem is advanced
  第二章介绍了信道编码及信道均衡的基本原理，主要针对gmsk调制信号的特点和gmsk码复信号调制进行了仿真，引出了信道均衡的问题。
• Cck , dqpsk are concluded as the best spread spectrum / modulation techniques in wireless image communication systems . 1 imbps and 300 meter range can be obtained using orinoco wireless network card based on eee802 . 11b wlans , which specifies cck , dbpsk , dqpsk techniques
  这种网卡采用直序扩频和cck 、 dbpsk 、 dqpsk调制方式，工作在2 . 4ghz频段，数据传输速率为11mbps ，传输距离最远达300米。
• In july 1998 , the ieee standardization group selected the ofdm modulation technique for their new ieee802 . 1 la standard , targeting data transmission from 6 up to 54 mbps . meanwhile , this new ieee standard is the first one to use ofdm in packet based communications
  同时该标准是第一个将ofdm技术应用于包传输通信中的ieee标准(在该标准提出以前， ofdm通常局限使用于连续传输系统中，如： dvb ， hdtv ) 。
• In chapter 2 , the principle of gmsk modulation is given in detail based on the discussion of various digital modulation techniques used in mobile communications . chapter 3 deals with the dsp assembly language implementation of 0 . 3 gmsk for gsm mobile phone test set
  第二章从数字移动通信系统中常用的调制解调方式出发，比较了实现gmsk调制的几种方法，提出了波形存储正交调制实现gmsk调制的基本原理。
• The latest and maybe most prominent system employing the ofdm modulation technique is the wlan standard ieee 802 . 11a . this paper is about the algorithms of synchronization , channel estimation , equalizer and soft - information extraction in the ofdm receiver
  本文基于dvb - tcofdm方案，对ofdm系统接收机的相关算法进行研究，重点放在同步(包括符号同步、频率同步和采样钟同步) 、信道估计、均衡及解映射等几个关键模块上。
• Considering the bandwidth efficiency , the error rate performance and the complexity for realization together , we construct a digital transmission system with single - carrier modulation technique using the optimum premodulation filter . then the system parameters and performance indexes are prensent
  综合考虑带宽效率、误码性能和实现复杂程度以后，构建出基于单载波调制技术的无线数字传输系统，并给出系统参数和性能指标。