Spectral Efficiency Improvement of OFDM by Using Time Domain Superimposition of Data
スポンサーリンク
概要
- 論文の詳細を見る
A scheme of the superimposing additional data signal in the time domain for orthogonal frequency division multiplexing (OFDM) system is proposed. The proposed scheme has a tradeoff between the degree of freedom for data transmission and inter-carrier interference (ICI), which provides the flexibility of data rate decision when the finite number of modulation and coding levels are available for the given channel condition. A performance analysis of the bit error rate (BER) confirms this tradeoff. In simulation on the practical environment which experiences multipath fading and error of channel estimation, the results show that much improvement of spectral efficiency has been achieved while keeping as nearly good bit error rate as the conventional OFDM. Moreover, the single carrier transmission of the superimposed additional data in the time domain also gives an opportunity of boosting the signal power up to the peak to average power ratio (PAPR) margin of the OFDM system.
- （社）電子情報通信学会の論文
- 2008-10-01
著者
-
YANG Janghoon
Dept. of Newmedia, KGIT
-
LEE JunKyoung
Dept. of Electrical and Electronic Engineering of Yonsei University
-
KIM DongKu
Dept. of Electrical and Electronic Engineering of Yonsei University
-
Yang Janghoon
Yonsei Univ. Seoul Kor
-
Yang Janghoon
School Of Electrical And Electronics Engineering Yonsei University
-
Yang Janghoon
Dept. Of Electrical And Electronic Engineering Of Yonsei University
-
Kim Dongku
Yonsei Univ. Seoul Kor
関連論文
- On the Performance of the Two-Cell Cooperative Single User (CSU) MIMO System with Hybrid Feedback
- An Approximation of the Average BER Performance of Multi-Hop AF Relaying Systems with Fixed Gain
- Pre-Processed Recursive Lattice Reduction for Complexity Reduction in Spatially and Temporally Correlated MIMO Channels
- Spectral Efficiency Improvement of OFDM by Using Time Domain Superimposition of Data
- Antenna Selective Algebraic STBC Using Error Codebook on Correlated Fading Channels
- A Near-Exact Sum Rate Approximation of Random Beamforming and Its Application to Mode Optimization
- A Closed Form Solution for the Sum Rate of Multiple Random Beamforming
- Downlink Beamforming Throughput Maximization for Multi-Cell Environment in the Presence of the Channel Uncertainty
- On the Performance of the Two-Cell Cooperative Single User (CSU) MIMO System with Hybrid Feedback
- Layered Video Transmission with Network Coding in a Cooperative Virtual MIMO Cellular Relay Networks
- Layered Video Transmission with Network Coding in a Cooperative Virtual MIMO Cellular Relay Networks