Exploiting Time Diversity to Improve Block Spread OFDM in a Multipath Environment

Exploiting Time Diversity to Improve Block Spread OFDM in a Multipath Environment

This paper presents a new method to improve on block spread OFDM by exploiting time diversity to ensure that the blocks are independent and uncorrelated in a multipath environment. While BSOFDM utilizes frequency diversity to significantly improve on OFDM in frequency selective channel, this did not...

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Bibliographische Detailangaben
Hauptverfasser: Raad, I.S., Xiaojing Huang
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Australia
Block Spread-OFDM
Delay
Fading
Frequency diversity
Frequency modulation
Interleaved codes
OFDM
OFDM modulation
Rayleigh channels
Spreading Matrices
Telecommunication computing
Time Diversity
Transmitters
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Beschreibung
Zusammenfassung:This paper presents a new method to improve on block spread OFDM by exploiting time diversity to ensure that the blocks are independent and uncorrelated in a multipath environment. While BSOFDM utilizes frequency diversity to significantly improve on OFDM in frequency selective channel, this did not improve during flat fading channel which does occur during transmission. Our work has also shown that this improvement is also true in multipath transmission. By exploiting time and frequency diversity, BSOFDM is improved significantly over conventional BSOFDM and conventional OFDM
DOI:10.1109/ICTTA.2006.1684790