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Recent content by insatiable

  1. I

    question about the channel simulation!

    hi,all. i am doing my project about the channel simulation now. i do not know how to silmulat the Nakagami-m Fading Channel. can anyone give me the m-file about the channel simulation, or some useful link. thank you!
  2. I

    precoding and beamforming

    hi, all can anyone tell me the differentces between precoding and beamforming in MIMO system? thank you
  3. I

    Question about the codebook

    hi,all. in infomration or coding theory, we often see that "use the independent gaussian codebook to encode the message", here i do not know what the 'independent' and 'gaussian' mean? anyone can explain them. thank you in advance
  4. I

    [SOLVED] who can help me? how can I learn cooperative communication

    Re: who can help me? how can I learn cooperative communicati hi,all. i am focusing on the mimo relaying recently. about the decode-and-forward scheme, it usually add CRC to the transmit signal. can anyone talk about that, and give me some matlab codes which use the CRC. thanks.
  5. I

    any book to recommend for MIMO information

    MIMO Wireless Communications by E.Biglieri MIMO Wireless Communications From Real-World Propagation to Space-Time Code Design by C.Oestges
  6. I

    what is bit /power loading mean?

    what is loading? hi all. can anyboady tell what the bit loading and power loading mean in communication system, they often appear in OFDM or MIMO sytem thans in advance!
  7. I

    some question about the snr regime

    hi,all. i read some papers and met some questions,hope to get your help. the questions are as follows: 1. 'While at high-SNR regime the main challenge is to use the degrees of freedom efficiently, energy efficiency becomes an important measure in the low-SNR regime.' 2. 'in the low-SNR regime...
  8. I

    MRC expert - SNR and BER question - need answer

    Re: MRC expert hi here is the google book address and you can find the formula you want in there https://books.google.com/books?id=n-3ZZ9i0s-cC&dq=wireless+communication+goldsmith&printsec=frontcover&source=bn&hl=en&ei=mtQpSp3IPI6W6wPK--DsCA&sa=X&oi=book_result&ct=result&resnum=4
  9. I

    MRC expert - SNR and BER question - need answer

    Re: MRC expert hi, you can find the BER formulas of MRC in professor Goldsmith "wireless communication" page 199
  10. I

    new in digital communication n also want to learn MATLAB

    learning of matlab for communication department hi, if you have learned or are learning communication or signal processing, you can try do some simulations about the course's experiments. it will be userful for you to understand how to use the matlab
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    DMT of SIMO system - how to evaluate it?

    DMT of SIMO system hi all. about the DMT of the MISO system is provided in zheng's paper. but it does not give the DMT of the SIMO system. since the system is only one transmit antenna, how to evaluate it? can anyone say something about it? if there are some papers about this, please tell...
  12. I

    [Q]traceback depth in viterbi decoding

    traceback depth hi all: my question is about the traceback in the Convolutional Coding. as we know, a typical value for traceback depeth is about five times the constraint length of the code. Any deeper traceback increases decoding delay and decoder memory requirements, while not...
  13. I

    question about the concept of tight bound

    hi all. about the communication system performance, like capacity bound, many papers mentiond the upper or lower bound is tight or tighter than the others bound. i do not know what is the 'tight ' mean here ? can anybody explain it. thanks
  14. I

    [Req] Linear algebra book

    hi all, can anyone tell me where i could download Gilbert Strang's book "Introduction to linear algebra" thank you in advance!
  15. I

    Ergodic and Non-ergodic channel

    ergodic channel wiki hi, all we use the shannon capacity and outage capacity in different case. can anyone talk about what decides the channel is ergodic or no-ergodic. is it the propagat environment or others? thanks:D
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