OFDM-CDMA transmission system
PERFORMANCE ANALYSIS OF FIXED AND MOBILE WIMAX SYSTEM BASED ON OFDM AND MC-CDMA SYSTEMS
... The rapid growth of internet and increasing interest in portable computing devices are likely to push demand for high-speed wireless data services with aggregated higher information bit rates. High throughput is needed ...
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CDMA Transmission with Complex OFDM/OQAM
... OQAM- CDMA systems for real-data transmission [7], it was clear that to cancel the imaginary part, some specific conditions on W-H codes were ...the system linearity, we can transmit complex data and ...
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Multiple Input Multiple Output Antenna Design
... access), OFDM (orthogonal frequency division multiplexing) and UWB (ultra- wide band) are the most developed technologies in present day mobile ...communication. OFDM is a parallel transmission ...
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Frequency domain equalization space time block coded CDMA transmission system
... Space-time block-codes (STBC) schemes have emerged as a powerful transmit diversity technique to combat fading in wireless communications. One of the most successful space-time coding scheme was first proposed by ...
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High performance mixed optical CDMA system using ZCC code and multiband OFDM
... optical CDMA spaces have been studied ...in transmission network as its distinguished each channel by a specific optical code ...optical CDMA coding system has been widely investigated for ...
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Analytical and Comparative Analysis of Ofdm, Cdma & Idma Systems
... the system due to the interference of noise into the system & it may happen when the flow of symbol pattern changes ...any system to work properly it is significant to have an optimized BER value ...
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Interference Robust Transmission for the Downlink of an OFDM Based Mobile Communications System
... data transmission, additional degrees of freedom are available which can be exploited for inter- ference suppression at the ...that transmission with real-valued data symbols can lead to a higher spectral ...
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PAPR Reduction Using PSO-GSA Tuned PTS Techniques in MC-CDMA System
... uplink transmission is asynchronous.Since MC-CDMA is a combination of CDMA and OFDM it takes advantage of both the schemes and inevitably has the same drawbacks ...MC-DS- CDMA spreads ...
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Design of Reconfigurable OFDM and CDMA Transceiver Based On FPGA
... data transmission in wireless communication systems using multiple transmit ...between transmission and reception in a good enough state to allow reliable ...greater system flexibility allowing ...
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BER performance of MC DS CDMA systems in the presence of timing jitter : a thesis presented in partial fulfillment of the requirements for the degree of Master of Engineering in Information and Telecommunication Engineering at Massey University, Palmerston North, New Zealand
... a transmission technique based on the idea of FDM. In OFDM, the transmitter transmits a single data stream over a number of lower rate orthogonal sub-carriers coupled with the use of advanced modulation ...
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Performance Evaluation of MC CDMA for Fixed WiMAX with Equalization
... basis OFDM system. The transmitter of an OFDM system consist of a modulator, serial to parallel (S/P) convertor, IFFT block, CP (Cyclic Prefix) insertion block and a parallel to serial ...of ...
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Low Complexity Channel Estimation for OFDM and MC CDMA
... SUMMARY In this paper we have proposed a channel estimation method, which is based on a low-complexity decision directed MMSE FS-CLR estimator combined with a robust time-domain FS-CIR p[r] ...
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Low Complexity Channel Estimation for OFDM and MC CDMA
... The ever-increasing demand for high data-rates in wireless networks requires the efficient utilisation of the limited bandwidth available, while supporting a high grade of mobility in diverse propagation en- vironments. ...
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Real Time Image Transmission through MIMO-OFDM System
... MIMO system along with OFDM which is the core technology of the next-generation 5G mobile ...communications. OFDM has distinctive feature that it has unique frequency domain block modulation and ...
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Detailed Mathematical Analysis and Performance Evaluation of MIMO-OFDM-CDMA System Using ZF Receiver
... MIMO- OFDM-CDMA system has been identified as a key technology to support high data rates in current and future wireless ...namely OFDM, CDMA and MIMO ...
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Performance of Bit Error Rate and Q-Factor for OFDM-RoF System using QAM Modulation
... Orthogonality. OFDM can deal with the various techniques possible to transmit through an optical ...mobile system network needs to prove its frequency signal everywhere in the network, and it maintains to ...
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DPSK OFDM System for Reliable Data Transmission using QRcode System in Mobile Devices
... Fig 2. Diagram of the algorithm used for data transfer. Data stream is supposed to include source coding and correction coding The required movement tolerance is achieved by putting data in phase differences of ...
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An Approach for increasing SNR with varying data rate in OFDM transmission system
... The OFDM signal is generated by implementing the Inverse Fast Fourier Transform (IFFT) at the transmitter and Fast Fourier Transform (FFT) at the receiver ...
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Joint Detection CDMA Techniques for Third generation Transceivers
... This section presents the results obtained from simulations using the ZF-BLE. Due to a lack of space, no results are presented for the other three techniques although their performance was found to be similar. The data ...
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Performance Analysis of a Wireless CDMA Transmission System with Receiver Diversity Schemes
... It was shown in [17], [20] that combining linear multiuser detection with multiple receiver antennas improves the BER performance for multipath fading multiuser CDMA channels. In [17], the MDD structure [15] is ...
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