MC-CDM/CDMA
An Overview of PAPR Reduction Techniques for an MC CDMA System
... downlink MC-CDMA is investigated with different number of active users and walsh hadamard and golay complementary sequences are used as spreading ...
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Subcarrier Group Assignment for MC CDMA Wireless Networks
... response from the perspective of corresponding users. How- ever, in a multicell environment, the use of only channel response information in subcarrier group assignment over- looks the severe impact of intercell ...
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MC CDMA PAPR Reduction Using Discrete Logarithmic Method
... Discrete Logarithmic Method (DLM) has earlier been used in cryptography [1]. If an air interface is used as a communication channel, the information of the communication may be exposed to an eavesdropper or system ...
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Performance Analysis of MC CDMA over Different Fading Channels
... In MC-CDMA, data symbols are modulated with many subcarriers instead of only one carrier like in ...In MC-CDMA, application of spreading code is done in frequency domain instead of time ...
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Performance Evaluation of MC CDMA for Fixed WiMAX with Equalization
... and CDMA. The difference between traditional DS-CDMA and MC-CDMA is that in MC-CDMA frequency spectrum is spread in frequency domain whereas in DS-CDMA spectrum band is ...
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Low Complexity Channel Estimation for OFDM and MC CDMA
... the MC-CDMA mode we employ a full set of 128- chip Walsh-Hadamard (WH) codes for frequency-domain spreading of the QPSK-modulated bits over 128 orthogonal ...the MC-CDMA ...
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PAPR Reduction of an MC CDMA system using SLM technique
... In this paper we examined the effect of SLM to reduce PAPR of MC-CDMA for different modulation schemes. The binary phase sequences considered in this paper are generated from hadamard matrix. From the ...
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Title: Performance Analysis of Channel Estimation in MC-CDMA over OFDM in Fading & Non Fading Channel Environment
... MC-CDMA with adaptive modulation is under scrutiny as appealing procedures for 4G portable system, in which the received signal is normally undermined by multipath fading effect. Steele and Webb (1991) ...
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Design and Implementation of MC CDMA Systems for Future Wireless Networks
... We have presented a codesign approach and associated tools for the MC-CDMA system rapid prototyping on a mixed ar- chitecture. This design goes from system specification and simulation to HW-SW code ...
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Performance Evaluation of Adaptive Modulation Based MC CDMA System
... multi-carrier CDMA system in conjunction with the above described adaptive ...with MC-CDMA transmission system is very assuring way to increase data ...a MC-CDMA system in Rayleigh ...
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MC CDMA based SDR for Next Generation Wireless Communication
... SOTC is a low-rate convolutional turbo code [7] that can be applied as spreading codes in MC-CDMA system. It is well suited for spread spectrum applications. The idea behind SOTC is to concatenate two ...
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PERFORMANCE ANALYSIS OF WAVELET PACKET BASED MC-CDMA WITH THE MC-CDMA SYSTEM USING HHT TRANSFORM WITH DIFFERENT NO OF USER
... conventional MC-CDMA system, orthogonal wavelet packet based MC-CDMA system (WP-MC-CDMA), and Huang Hilbert Transformation (HHT) based MC-CDMA ...conventional ...
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Survey of Interference Mitigation Techniques and Correlation Properties of Spreading Codes for MC-CDMA System
... There are number of techniques for capable of mitigating MAI like Multiusers detection, function of spreading sequence, Maximum ratio combining (MRC), Orthogonal restoring combining (ORC) Minimum mean square error ...
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Performance Evaluation of Wavelet Packet Based MC-CDMA and HHT Based MC-CDMA System
... The MC-CDMA basic transmitter structure is similar to the OFDM, the main difference being that the MC- CDMA transmits the same symbol in parallel through a lot of subcarriers, whereas OFDM ...
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Enabling dynamic spectrum access using SS MC CDMA
... By combining frequency domain and time domain dispersal of modulated symbols, two main variants of multi-carrier spread spectrum systems, the MC-CDMA and MC direct sequence CDMA MC-DS-CD[r] ...
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PAPR Reduction Based on Proposed Rotating Phase Shift Technique in MC CDMA Using FPGA
... In [7], the authors have proposed a lower complexity PAPR reduction scheme, which at the transmitter side a single IFFT block is used without any sub-block partitioning or phase factors. FPGA implementation of ...
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Channel Estimation for Powerline MC CDMA System
... up-link MC-CDMA systems is mathematically equivalent to that in multiple input multi- ple output (MIMO) orthogonal frequency division multi- plexing (OFDM) systems ...up-link MC-CDMA systems. ...
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A Proposed Turbo Coded Wavelet Packet Modulation based MC CDMA
... One method suggested to improve the performance of a communication system is to use the channel coding. Channel coding refers to the class of signal transformations designed to improve communication performance by ...
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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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Download complete issue: Vol. 2, No. 1 (PDF)
... multicarrier CDMA S-ALOHA, each user is allowed to transmit multiple orthogonal codes, so the proposed MC-MC-CDMA S-ALOHA system can support various data rates, as required by the next ...
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