Channel estimation based on linear interpolation algorithm in DDO-OFDM system

2010 ◽  
Author(s):  
Jing Zhang ◽  
Kun Qiu ◽  
Yonggang Li ◽  
Hongbo Zhang ◽  
Mingliang Deng
Keyword(s):  
Channel Estimation ◽  
Linear Interpolation ◽  
Interpolation Algorithm ◽  
Ofdm System

Channel estimation based on linear interpolation algorithm in DDO-OFDM system

2010 ◽  
Author(s):  
Jing Zhang ◽  
Hongbo Zhang ◽  
Mingliang Deng ◽  
Kun Qiu ◽  
Yonggang Li
Keyword(s):  
Channel Estimation ◽  
Linear Interpolation ◽  
Interpolation Algorithm ◽  
Ofdm System

Channel Estimation Based on Interpolation in OFDM System

2010 ◽  
Vol 439-440 ◽  
pp. 794-798
Author(s):  
Yue Hua Cui ◽  
Shuang Ye ◽  
Qiu Rui Wu ◽  
Jian Hua Liu ◽  
Yan Dai
Keyword(s):  
Channel Estimation ◽  
Orthogonal Frequency Division Multiplexing ◽  
Estimation Algorithm ◽  
Linear Interpolation ◽  
High Rate ◽  
Transform Domain ◽  
Rate Data ◽  
Ofdm System ◽  
High Spectral Efficiency ◽  
Low Pass

OFDM（Orthogonal Frequency Division Multiplexing）is a new modulation technology, which can reduce multi-pass interference efficiently. It splits a high-rate data stream into a number of lower-rate data streams which can be transmitted simultaneously over a number of subcarriers. It brings high spectral efficiency. In this paper, we first introduce the channel estimation algorithm based on comb-pilot in OFDM system, and emphasis on analysis and comparison of the three kinds of interpolation methods: linear interpolation, low-pass interpolation and transform-domain interpolation. We use MATLAB to carry out the system simulation, and its results indicate that: The performance of low-pass interpolation is the best ,but it’s hard to carry out; transform-domain interpolation’s performance and complexity are both between above two methods.

An Improved Channel Estimation Algorithm and Implementation Based on FPGA for OFDM System

2012 ◽  
Vol 500 ◽  
pp. 689-695
Author(s):  
Chang Sheng Xia ◽  
Min Shi ◽  
Li Juan Feng
Keyword(s):  
Channel Estimation ◽  
Interpolation Method ◽  
Estimation Algorithm ◽  
Linear Interpolation ◽  
Least Square ◽  
Matlab Simulation ◽  
Ofdm System ◽  
Fpga Design ◽  
Linear Interpolation Method ◽  
Frequency Domain Response

An improved FPGA implementation of channel estimation based on pilot arrangement is proposed in this paper. Typical methods are firstly investigated and compared by MATLAB simulation. The paper puts the pilots to the least square criterion to estimate the channel frequency domain response by using linear interpolation method with comb-type pilots arrangement in FPGA implement, it makes a good balance between algorithmic capability and FPGA design complexity. The simulations prove that the design can accomplish channel estimation and emendation, and it can meet the demand of the system.

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