Bandwidth Efficient OFDM Transmitter Diversity Techniques
نویسندگان
چکیده
منابع مشابه
Path Diversity Schemes in OFDM Transmitter and Receiver
Orthogonal frequency division multiplexing (OFDM) is a very attractive modulation technique for reliable broadband wireless communications such as wireless local area network (WLAN), worldwide interoperability for microwave access (WiMAX), etc. In wireless communications, multipath fading distorts a received signal and causes bit errors at a receiver side. To overcome the e ect of fading, diver...
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This paper presents different spatial diversity techniques that can be employed in an OFDM based WLAN system to improve the system performance. We present some results obtained by simulation when a HIPERLAN/2 transceiver is employed.
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Power line communications for high data rates using orthogonal frequency division multiplexing are considered. We regard the situations where no channel information is available at the transmitter and where channel information is/ is not provided to the receiver. In order to enable a performance evaluation of transmission schemes with different bandwidth efficiencies, a stochastic representatio...
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Orthogonal transmitter diversity such as frequency diversity and time diversity is quite simple to implement and, with optimum signal combining, can take full advantage of fading multipath channels. However, such a scheme has a bandwidth efficiency that decreases inversely with the number of diversity branches making it less attractive in wireless communications applications. This paper conside...
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ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2004
ISSN: 1687-6172,1687-6180
DOI: 10.1155/s1110865704310139