A Low-PAPR Multiplexed MC-CDMA System with Enhanced Data Rate and Link Quality
スポンサーリンク
概要
- 論文の詳細を見る
Recently, a new multi-carrier CDMA (MC-CDMA) system with cyclic-shift orthogonal keying (CSOK) has been proposed and shown to be more spectral and power efficient than conventional MC-CDMA systems. In this paper, a novel extension called the multiplexed CSOK (MCSOK) MC-CDMA system is proposed to further increase the data rate while maintaining a low peak-to-average power ratio (PAPR). First, the data stream is divided into multiple parallel substreams that are mapped into QPSK-CSOK symbols in terms of cyclic shifted Chu sequences. Second, these sequences are repeated, modulated, summed, and placed on IFFT subcarriers, resulting in a constant-modulus multiplexed signal that preserves the desired orthogonality among substreams. The receiver performs frequency-domain equalization and uses efficient demultiplexing, despreading, and demapping schemes to detect the modulation symbols. Furthermore, an alternate MCSOK system configuration with high link quality is also presented. Simulations show that the proposed MCSOK system attains lower PAPR and BER, as compared to conventional MC-CDMA system using Walsh codes. Under a rich multipath environment, the high link quality configuration exhibits excellent performance with both diversity gain and MCSOK modulation gain.
- 2010-01-01
著者
-
DENG Juinn-Horng
Department of Communication Engineering and Microelectronics and Information Systems Research Center
-
Deng Juinn-horng
Department Of Communications Engineering Yuan Ze University
-
Hwang Jeng-kuang
Department Of Communications Engineering Yuan Ze University
-
HWANG Jeng-Kuang
Department of Communications Engineering, Yuan Ze University
関連論文
- A Low-PAPR Multiplexed MC-CDMA System with Enhanced Data Rate and Link Quality
- A Space-Time Multi-Carrier CDMA Receiver with Blind Adaptive MAI Suppression
- A Differential Cross-Correlation Cell Search Algorithm for IEEE 802.16e OFDMA Systems
- A Differential MIMO SC-FDE Transceiver Design over Multipath Fast Fading Channels
- Time-Frequency Cyclic Shift Keying Transceiver for Low PAPR MC-CDMA Uplink System over Multipath Fading Channels
- Low Complexity Hybrid Smart Antenna with Directional Elements over Frequency Selective Fading Channel