low bit rate performance
Bit error rate performance enhancement of orthogonal frequency division multiplexing
... BER performance of OFDM systems. When there is no CFO, there are no bit errors, since we stated before that we have ignored the effects of background ...is low, the BER increases exponentially with ...
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Improved Adaptive Bit Error Rate Performance for Fading Channel Communication
... the bit error rate performance characteristics of equalizers namely, ZF,SD,ML MMSE ,DFE, and MLSE ...at low BERs, both the MLSE algorithm and the DFE algorithm suffer from error ...error ...
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Dual Tree Wavelet based OFDM: A Performance Calculation of Bit Error Rate
... In this paper, a proficient technique OFDM-DT-CWT system was proposed. Extensive simulation programs were performed to investigate the efficiency of the proposed system compared with traditional OFDM-DWT and OFDM-FFT ...
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A Very Low Bit Rate Image Compressor Using Transformed Classified Vector Quantization
... advantages of both the DCT and the CVQ while preserving good reconstructed image quality. The codebook uses a smaller dimension for its code vector, reducing the complexity of the sample space and decreasing the size of ...
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Warped Discrete Cosine Transform-Based Low Bit-Rate Block Coding Using Image Downsampling
... pression bit-rate results for the Barbara image with differ- ent types of ...better performance compared to the stan- dard quantization approach generally, particularly for higher ...extremely ...
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Feature extraction for very low bit rate video coding
... in performance. The low-level processing used by these methods, such as transforms, ltering and correlations, is by now well understood and major leaps in performance are therefore not to be ...
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Bit Error Rate Performance in Coherent Optical Systems
... transmitted bit error is generally termed as ...predefined bit-error rate (BER) ...Although bit error rates are typically on the order of 10 -6 to 10 -9 at 155 Mb/s, this is adequate for some ...
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A new ici cancellation scheme and performance analysis of bit error rate for mimo ofdm based systems
... data rate, and high mobility, We consider the performance analysis and design optimization of low density parity check (LDPC) coded multipleinput- ...
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FMO-based H.264 frame layer rate control for low bit rate video transmission
... H.264/AVC rate control include adopting new frame complexity measures to enhance the model-based rate control scheme in [4] that uses ...the bit allocation. In [9], a rate control technique ...
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Satellite Image Compression using Discrete wavelet Transform
... The image compression is most important task to be accomplished on order to save storage capacity, several image compression methods are explored in [13] mostly based on spatial features. G.Kwallace in [1] proposed a ...
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Low Bit Error Rate Based Communication by IEEE 802 15 4
... the performance of IEEE 802.15.1, and IEEE 802.15.4 . The performance metrics measured in this study includes BER (Bit Error ...Error Rate) affects the performance of IEEE ...
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Performance Analysis of Hybrid DWT and DCT based Compression Techniques for Low Bit Rate
... Compression is basically of two types: Lossy and Lossless. Lossy compression technique consists of basically three main steps: Transform quantization and coding. The main difference between Lossy and Lossless Compression ...
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Performance Analysis In Term Bit Error Rate (BER) On Decoding Algorithm Of Turbo Codes
... There is another form called Turbo Product Code or TPC. This form has a very different structure from the PCCC or SCCC. TPC use block codes instead of convolutional codes. Two different block codes (usually Hamming ...
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Efficient Low Bit Rate Low Latency Channelization in DECT
... for low bit-rate channels, one should simultaneously employ as little band- width as possible without increasing the ...receiver performance in a multi- path ...multiple low ...
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Enhanced Adaptive Approach of Video Coding at Very Low Bit Rate Using MSPIHT Algorithm
... In this section, the proposed system explanation and the implementation are presented. The wavelet transforms of the system compress the frames and provides reliable process at a very low bit rate. ...
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International Journal of Computer Science and Mobile Computing
... Optimized network engineering tool (OPNET) modeler is an interactive graphical user interface (GUI) [23, 25] that provides hierarchical structure of problem solving. Moreover, it includes lot of documentation on learning ...
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SECURE VOICE COMMUNICATION USING LOW BIT RATE SYSTEM FOR GSM USERS
... GSM has used a variety of voice codecs to compress 3.1 kHz audio into between 6.5 and 13 kbps with the aim to compress the speech signal before its transmission while maintaining an acceptable quality of the decoded ...
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Performance Estimation Of PTS Based PAPR Reduction With CFO Optimization Of Multi Carrier CDMA System Over Frequency Selective Fading Channel
... 64 bit QPSK shows better performance in case of Bit Error Rate, PAPR, spectral efficiency, and Carrier Frequency Offset for achieving high speed data transmission in MC-CDMA with PTS ...
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Channel estimation algorithms and bit error rate analysis of cognitive radio
... In this paper section I presents introduction about cognitive radio and the research works carried out related to channel estimation of CR links. Section II mathematically portrays system model of a cognitive radio ...
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GA Based Sensing of Sparse Multipath Channels with Superimposed Training Sequence
... the performance of proposed scheme, the NCME against SNR is plotted in ...the performance of GA estimator significantly improves with an increase in population size up to 2L ...NCMSE performance ...
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