SER(symbol error rate) performance of PSK
標(biāo)簽： performance symbol error rate
上傳時(shí)間： 2013-12-25
上傳用戶：aeiouetla
Its a simulink model to comare BER and Symbol error rate
標(biāo)簽： simulink comare Symbol model
上傳時(shí)間： 2017-09-17
上傳用戶：cccole0605
在理論分析循環(huán)碼編碼和譯碼基本原理的基礎(chǔ)上，提出了基于單片機(jī)系統(tǒng)的(24，16)循環(huán)碼軟件實(shí)現(xiàn)編碼、譯碼的方案。仿真結(jié)果表明(24，16)循環(huán)碼能有效地克服來(lái)自通訊信道的干擾，保證數(shù)據(jù)通信的可靠及系統(tǒng)的穩(wěn)定，使誤碼率大幅度降低。本論文對(duì)(24，16)循環(huán)碼的研究結(jié)果表明，可以有效地降低錯(cuò)誤概率和提高系統(tǒng)的吞吐量，實(shí)現(xiàn)糾錯(cuò)僅需要在接收端增加有限的存儲(chǔ)空間和計(jì)算復(fù)雜度，具有一定的實(shí)用價(jià)值。 Abstract: Based on analyzing the theory of encoding and decoding of cyclic code， this paper showed the schemes of encoding and decoding of(24，16)cyclic code by the software and based on microcontroller. Simulation results show that using (24，16) cyclic codes can effectively overcome the interference from communication channel， ensure the reliability and stability of data communication systems， and reduce the bit error rate greatly. The results of this paper show that by using the (24，16) cyclic code， the error rate can be reduced and the system throughput can be improved. Meanwhile， the system only needs to enlarge limited storage space and computation the complexity at the receiving end to realize error correction. Thus the (24，16) cyclic code has a practical value.
標(biāo)簽： 24 16 單片機(jī)系統(tǒng) 循環(huán)碼
上傳時(shí)間： 2013-11-09
上傳用戶：gaoliangncepu
提高衛(wèi)星通信信道傳輸效率的新途徑本 文 結(jié) 合 V SAT衛(wèi)星通信系統(tǒng)設(shè)計(jì)中涉及衛(wèi)星通信傳輸技術(shù)極為重要的 信道編碼與調(diào)制解調(diào)方式，探討了各種新型的衛(wèi)星信道編碼與調(diào)制解調(diào)技術(shù)， 它們的原理及在衛(wèi)星通信中的應(yīng)用。在數(shù)字調(diào)制中，信號(hào)傳輸質(zhì)量主要取決于 比特差錯(cuò)率BER (Bit Error Rate)，因此要盡可能采用相同的每比特信號(hào)能量與 噪聲功率譜密度比(Eb/N.)的條件下，BER低的調(diào)制方式，以節(jié)省衛(wèi)星功率 另外頻帶利用率要盡可能的高，以節(jié)省寶貴的衛(wèi)星頻帶。本文還對(duì)各種不同的 差錯(cuò)編碼與調(diào)制技術(shù)進(jìn)行了實(shí)驗(yàn)和詳細(xì)的性能比較。
標(biāo)簽： 衛(wèi)星通信 SAT 信道傳輸 傳輸技術(shù)
上傳時(shí)間： 2015-09-16
上傳用戶：AbuGe
This program includes: [5 7] convolutional code (encoder) + BPSK + AWGN + MAP (decoder). It evaluates Bit Error Rate and plots it versus SNR(signal to Noise Ratio).
標(biāo)簽： convolutional includes program encoder
上傳時(shí)間： 2015-12-24
上傳用戶：bruce5996
Matlab is an ideal tool for simulating digital communications systems, thanks to its easy scripting language and excellent data visualization capabilities. One of the most frequent simulation tasks in the field of digital communications is bit-error- rate testing of modems. The bit-error-Rate performance of a receiver is a figure of merit that allows different designs to be compared in a fair manner. Performing bit-error-Rate testing withMatlab is very simple, but does require some prerequisite knowledge
標(biāo)簽： communications simulating scripting digital
上傳時(shí)間： 2014-01-02
上傳用戶：plsee
Process a binary data stream using a communication system that consists of a baseband modulator, channel, and demodulator. Compute the system s bit error rate (BER). Also, display the transmitted and received signals in a scatter plot.
標(biāo)簽： communication modulator baseband consists
上傳時(shí)間： 2017-01-08
上傳用戶：ardager
The software is capable to simulate space time code [1] for QPSK modulation using different number of state. Examples of generator matrix up to 256 stetes are provided. Variable signal to noise ratio (SNR) might be applied to produce bit error rate (BER) or frame error rate (FER) curves.
標(biāo)簽： modulation different software simulate
上傳時(shí)間： 2014-01-22
上傳用戶：qq1604324866
Introduction Matlab is an ideal tool for simulating digital communications systems, thanks to its easy scripting language and excellent data visualization capabilities. One of the most frequent simulation tasks in the field of digital communications is bit-error- rate testing of modems. The bit-error-Rate performance of a receiver is a figure of merit that allows different designs to be compared in a fair manner. Performing bit-error-Rate testing withMatlab is very simple, but does require some prerequisite knowledge.
標(biāo)簽： communications Introduction simulating digital
上傳時(shí)間： 2017-03-20
上傳用戶：as275944189
A combined space鈥搕ime block coding (STBC) and eigen-space tracking (EST) scheme in multiple-input-multiple-output systems is proposed. It is proved that the STBC-EST is capable of shifting hardware complexity from the receiver to the transmitter without any bit error rate (BER) performance loss. A computation efficient EST algorithm is also proposed, which makes the STBC-EST affordable. Simulation results show that the STBC-EST with a modest feedback requirement results in a negligible BER performance loss compared with a dual system configuration.
標(biāo)簽： multiple-input-m eigen-space combined tracking
上傳時(shí)間： 2014-01-13
上傳用戶：磊子226
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