coded MC-CDMA system
Rotated Walsh Hadamard Spreading with Robust Channel Estimation for a Coded MC CDMA System
... nal matrix with the elements u on the diagonal. k represents the k th user 1, . . . , K; B is a constant that is defined by the modulation cardinality for the PSK alphabet. It is 4 for 4- QAM, and 8 for the 16-QAM ...
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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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Space Time Coded MC CDMA: Blind Channel Estimation, Identifiability, and Receiver Design
... consider MC-CDMA systems equipped with multiple transmit antennas and some space-time (ST) block coded transmission schemes [20] in order to provide transmit diversity to the ...in ...
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Performance Evaluations and Comparisons of Several LDPC Coded MC-FH-CDMA Systems
... of MC-FH and FFH systems using non-coherent detection has been evaluated in [6], in which it has been shown that the non-coherent MC-FH system outperforms the FFH system when the channel delay ...
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Quadrature Amplitude Modulation: From Basics to Adaptive Trellis Coded, Turbo Equalised and Space Time Coded OFDM, CDMA and MC CDMA Systems
... Global System of Mobile Communications known as GSM an impressive effort was made by Boss, Kammeyer and Petermann [88], who also proposed two novel blind ...
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Performance of multicarrier complementary coded CDMA under frequency selective Nakagami m fading channels
... the system without interference cancellation ...the MC CC-CDMA with MRC-PIC-MRC, ORC-PIC-MRC, and MMSE-PIC-MRC provides BER of ...of MC CC-CDMA without ...
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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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PAPR Reduction Using PSO-GSA Tuned PTS Techniques in MC-CDMA System
... communication system. Since it is a combination of both OFDM and CDMA, it explores the advantages of both the ...hadamard coded MC-CDMA is a suitable candidate in this regard which can ...
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Performance Enhancement of MC-CDMA System through STTC based STBC Site Diversity
... STTC is described by the trellis diagram and is illustrated in Fig.3 and the encoder structure for the generator matrix is given in Fig.4 for 4-state STTC with two-transmit antennas. The trellis diagram is similar to ...
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International Journal of Emerging Technology and Advanced Engineering
... of CDMA and spread spectrum with OFDM in order to create a more robust modulation scheme that could survive frequency selective fading and thus OFDM- CDMA was ...OFDM-CDMA system with various ...
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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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Frequency domain equalization space time block coded CDMA transmission system
... In the first experiment we compare two different transcei- vers, the one proposed in [4], adapted to the systems in Table 1 as reported in [16], denoted as STBC in the fig- ures, and the transceiver proposed in this ...
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Pre-Decorrelation for Coded DS-CDMA System with Space-Time Block Coding
... the coded direct sequence code division multiple access (DS-CDMA) multiuser detection (MUD) with space time coding ...the system without using pre-decorrelation ...
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Performance of Fractionally Spread Multicarrier CDMA in AWGN as Well as Slow and Fast Nakagami m Fading Channels
... FS MC-CDMA for simplicity of ...FS MC- CDMA scheme the doubly DS spread signal is further spread also in the frequency (F)-domain with the aid of a number of subcarriers, as it will be ...
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Compressive Sensing Multi User Detection for MC CDMA System in Machine to Machine Communication
... Machine to Machine (M2M) Communication is one of the core technologies of 5G in the future. It is predicted that M2M will come up to 26 billion devices by 2020 [1]. As a consequence, large scale of the terminal put ...
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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 Enhancement of MC CDMA System through Turbo Block Codes
... in MC-CDMA system, by reducing ...multi-carrier CDMA (SCS-MPSK-MCCDMA) system [3], a modified PTS scheme for uplink communications [4], optimum fixed subcarrier scrambling [5], cyclic ...
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Analysis of Carrier Frequency Selective Offset Estimation - Using Zero-IF and ZCZ In MC-DS-CDMA
... Technological advances over the past two decades have led to the rapid evolution of the telecommunications industry. No longer limited to narrow-band voice signals, modern communications integrate voice, images, data, ...
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Ant Colony Based Multiuser Detection for MC DS CDMA Systems
... an MC DS-CDMA ...proposed MC DS-CDMA system supporting K = 32 users with the aid of length-31 Gold codes used as the T-domain spreading ...the MC DS-CDMA system ...
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Performance Evaluation of MC CDMA for Fixed WiMAX with Equalization
... 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 ...the system ...
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