导频功率

文章主要介绍了WCDMA无线网络规划的关键点，包括小区呼吸效应、小区覆盖与容量相互依赖关系、导频功率分配等；

This paper emphasizes the key points of the WCDMA radio network planning including cell breathing , the relation between coverage and capacity , pilot power distribution .

首先降低导频功率来提高系统的吞吐量，然后在一个OFDM符号内，通过迭代进行的信道估计与符号检测来提高系统的误码率。

With lower pilot power , the proposed scheme increases system throughput firstly , and then the channel estimation and symbol detection proceed iteratively within one OFDM symbol to improve the BER performance .

CDMA前反向链路平衡问题以及导频功率的优化配置

Balance of Forward / Reverse Link and Optimization Configure of Pilot Power in CDMA

PP-OFDM的最优导频功率分配参数应通过二维搜索得到，ZP/PP-OFDM仅有一维参数可优化。

The optimal power allocation of PP-OFDM can be found by two-dimension searching , while there is only one-dimension needed to optimize for CP / ZP-OFDM .

仿真表明，CP/ZP/PP-OFDM分别采用各自的最优导频功率分配参数时，PP-OFDM的误码率最低，这得益于PP-OFDM更好的信道估计性能。

Simulation shows that PP-OFDM has lower Bit Error Rate than CP / ZP-OFDM because of better channel estimation performance , when CP / ZP / PP-OFDM have their own optimal pilot power allocation respectively .

一种鲁棒的变导频功率多径信道估计方法

A Robust Varying Pilot Power Method for Multi-path Channel Estimation

当导频功率较低时，信道估计误差较大，系统性能较差。

The estimation error will be large when the power of pilot is low .

最后，在链路平衡的条件下，根据小区负载的情况来配置导频功率。

Finally , the pilot power is configed according to cell load on the condition of balance link .

文中就导频功率比对系统容量及链路平衡的影响进行了探讨和研究，给出了在满足链路平衡条件下恰当的导频功率比范围。

This paper discusses the capacity and link-balance impact of pilot to powerratio , and gives an adequate pilot to powerratio percentage under link-balance condition .

cdma1x无线子系统导频信道功率分配分析

Analysis of cdma 1x System Pilot Channel Power Assignment

在无线通信系统中，导频信号功率分配比例对系统的性能有着重要的影响。

In the wireless communication system , the pilot power allocation strongly impacts the performance of the system .

第三章，对跳频突发通信中的信号到达检测技术进行了讨论，分析了基于特殊导频的功率检测和相关检测两种检测方法，对其性能进行仿真，分析比较后提出了优化的方法。

Chapter three discusses the burst data detection technique . It gives the description and comparison between two different methods , the power detection and the correlation detection .

由于公共导频信道无功率控制，有可能在接收端接收到的公共导频信号的功率很低，使得信道估计的误差变大。

Because there is no power control in CPICH , the received common pilot signal power is possibly very low if the mobile is far from the base station , and this time the channel estimates is inaccurate .

同时，论文通过现场工程实例，重点分析了实际工程中影响网络性能的因素，并通过路测对导频污染、收发功率、载干比、拥塞情况予以优化。

Meanwhile , I also analyzed impacts towards network which emerges in a construction process by studying project cases and optimize the indexes of pilot frequency pollution Transceiver power , carrier-to-interference ratio , and jam situation via Metric Drive .

该方法通过选择可靠的解调数据符号作为虚导频，同时对导频采用功率控制，从而提高了信道估计的质量。

In order to enhance the quality of channel estimation , we select reliably demodulated data symbols as the virtual pilots , at the same time , transmitting power control can be employed on the transmitted pilot symbols .

在二维RAKE接收机中，通常仅用导频信道来估计信道矢量，当导频功率较低时，估计误差较大。

Channel vector is estimated only by utilizing pilot channel in 2-D RAKE receiver conventionally . The estimation error will be large when the power of pilot signal is weak . A novel algorithm of channel vector estimation is proposed in this paper .