Description: 这是log-map或者说是软输出维特比算法的一个实现。-This is the log-map or the soft output Viterbi Algorithm in a realization. Platform: |
Size: 7944 |
Author:逄玉叶 |
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Description: 这是log-map或者说是软输出维特比算法的一个实现。-This is the log-map or the soft output Viterbi Algorithm in a realization. Platform: |
Size: 7168 |
Author:逄玉叶 |
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Description: 软输出维特比译码算法的C语言详细实现,程序效率高,比MATLAB快多了.-Soft-output Viterbi algorithm realize the C language in detail, procedures efficient and quicker than MATLAB. Platform: |
Size: 5120 |
Author:李华 |
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Description: ％ decode with soft-input viterbi algorithm 硬判决
％ //k=4,r=1/2
％输入数据为软信息，并且数据为均值为1的BPSK调制，如果均值为MEAN,那么62,63,103,104行应做相应修改- Decode with soft-input viterbi algorithm hard-decision// k = 4, r = 1/2 input data for the soft information and data for the average one of BPSK modulation, if the average for the MEAN, then the line should 62,63103104 make consequential amendments to Platform: |
Size: 2048 |
Author:陈富龙 |
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Description: 在GSM通信系统中，Viterbi检测是一个及其重要的部分，许多的研究人员在这里花费了大量的心血。参考各种资料，我们总结得出以下Viterbi软输出算法，与传统的硬判决方法相比，可以提高2～3个db的增益：-In GSM communication systems, Viterbi detection is an important part of many researchers here spent a lot of effort. Reference to a variety of information, we summarize the following soft-output Viterbi algorithm, with the traditional hard-decision method, can be raised by 2 ~ 3 db gain: Platform: |
Size: 2048 |
Author:戴浩 |
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Description: Simulation of Turbo Encoding and Decoding" A randomly generated information bits are encoded with Turbo Encoder (which uses two RSC Encoders in parallel along with an interleaver) and added with AWG Noise then decoded with Turbo Decoder (Soft Output Viterbi Algorithm). We have understood/used TI TMS320C55x Processor and its assembly instruction set. Platform: |
Size: 291840 |
Author:satya |
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Description: SOVADEC is an implementation of the soft input soft output Viterbi
algorithm. The algorithm can be called using
DEC = SOVADEC( MSG, LLR, TRELLIS, WIN )-SOVADEC is an implementation of the soft input soft output Viterbi algorithm. The algorithm can be called using DEC = SOVADEC (MSG, LLR, TRELLIS, WIN) Platform: |
Size: 3072 |
Author:aeou607 |
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Description: This function implememts Soft Output Viterbi Algorithm in trace back mode
Input:
rec_s: scaled received bits. rec_s(k) = 0.5 * L_c(k) * y(k)
L_c = 4 * a * Es/No, reliability value of the channel
y: received bits
g: encoder generator matrix in binary form, g(1,:) for feedback, g(2,:) for feedforward
L_a: a priori information about the info. bits. Extrinsic info. from the previous
component decoder
ind_dec: index of the component decoder.
=1: component decoder 1 The trellis is terminated to all zero state
=2: component decoder 2 The trellis is not perfectly terminated.
Output:
L_all: log ( P(x=1|y) ) / ( P(x=-1|y) )
Frame size, info. + tail bits- This function implememts Soft Output Viterbi Algorithm in trace back mode
Input:
rec_s: scaled received bits. rec_s(k) = 0.5 * L_c(k) * y(k)
L_c = 4 * a * Es/No, reliability value of the channel
y: received bits
g: encoder generator matrix in binary form, g(1,:) for feedback, g(2,:) for feedforward
L_a: a priori information about the info. bits. Extrinsic info. from the previous
component decoder
ind_dec: index of the component decoder.
=1: component decoder 1 The trellis is terminated to all zero state
=2: component decoder 2 The trellis is not perfectly terminated.
Output:
L_all: log ( P(x=1|y) ) / ( P(x=-1|y) )
Frame size, info. + tail bits Platform: |
Size: 1024 |
Author:yk |
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Description: SOVATEC是实施软输入软输出维特比
算法。该算法可以使用被称为其中味精是软输入（码字），LLR是每比特的先验信息对位（对数似然比），棚架棚架结构描述卷积编码器，用于编码的原始信息的消息。- SOVADEC is an implementation of the soft input soft output Viterbi
algorithm. The algorithm can be called using
DEC = SOVADEC( MSG, LLR, TRELLIS, WIN )
where MSG is the soft input (codeword), LLR is a priori information
per bit about the bits (log likelihood ratios), TRELLIS is the
trellis structure describing the convolutional encoder used to
encode the original information message. Platform: |
Size: 3072 |
Author:冬瓜 |
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Description: 该程序利用软输入软输出Viterbi算法实现对卷积编码的译码，同时输出软判决和硬判决结果-The Code is for the decoding operation of the convolution code by soft-input soft-output viterbi algorithm, and output the hard-decision and soft-decision results Platform: |
Size: 1024 |
Author:杨勇 |
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Description: GSM Channel Equalization
This application note describes the theory and implementation of GSM channel equalization and channel decoding algorithms using the Freescale MSC8126 Viterbi coprocessor (VCOP). It also examines the theory behind the soft output Viterbi algorithm (SOVA) assisted by the VCOP. Code examples illustrate how the VCOP performs channel equalization and the SOVA algorithm. A set of suggested design practices for VCOP usage is followed by a discussion of the VCOP driver, which provides a simple, easy interface to the VCOP. Examples of driver usage cover GSM equalization, channel decoding, and SOVA. The source code and the header file for the VCOP driver are also presented. Platform: |
Size: 402432 |
Author:JRB |
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