Methods to improve Log-MAP Decoding in Frequency Selective Fading Channels
نویسندگان
چکیده
منابع مشابه
Frequency Selective Fading Channels
In the last lecture, two terms Average Delay and RMS Delay Spread were defined as below () () ∫ ∫ ∞ ∞ Φ Φ = 0 0 τ τ τ τ τ µ τ d d (1) () () () ∫ ∫ ∞ ∞ Φ Φ − = 0 0 2 τ τ τ τ µ τ σ τ τ d d c c (2) If the power density is discrete like Figure 1, the Average Delay and RMS Delay Spread for the multipath profile could be written in the following way: () () ∑ ∑ = k k k k k p p τ τ τ τ (3) () 2 2 τ τ σ...
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متن کاملOptimal training for frequency-selective fading channels
ABSTRACT Many communications systems employ training, i.e., the transmission of known signals, so that the channel parameters may be learned at the receiver. This has a dual effect: too little training and the channel is improperly learned, too much training and there is no time left for data transmission before the channel changes. In this paper we use an information-theoretic approach to find...
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ژورنال
عنوان ژورنال: Journal of the Korea Society of Computer and Information
سال: 2016
ISSN: 1598-849X
DOI: 10.9708/jksci.2016.21.9.051