Title :
Compression schemes for the feedback channel in multiband-OFDM UWB systems
Author :
Chakraborty, Kaushik ; Das, Soumya ; Dural, Özgür ; Rajamani, Krishnan ; Soliman, Samir S.
Author_Institution :
Qualcomm Inc., San Diego, CA, USA
Abstract :
In time-varying channels, channel state information (CSI) is often provided via a feedback channel to facilitate dynamic allocation of resources like transmit power and data rates. In OFDM-based ultra wideband (UWB) channels, the signaling overhead for this CSI feedback can be extremely large. In this paper, we propose several compression schemes for the feedback channel that exploit the temporal and spatial correlation properties of the multiband-OFDM UWB channel, viz., fixed and variable spectral binning techniques, hierarchical binary tree-based spectral compression schemes, and Markov state-based differential temporal compression schemes.
Keywords :
OFDM modulation; correlation methods; feedback; time-varying channels; ultra wideband communication; Markov state-based differential temporal compression schemes; channel state information; dynamic resource allocation; feedback channel; fixed-variable spectral binning techniques; hierarchical binary tree-based spectral compression schemes; multiband OFDM UWB systems; orthogonal frequency division multiplexing; signaling overhead; spatial correlation properties; temporal correlation properties; time-varying channels; ultrawideband communication; Channel state information; Data communication; Frequency domain analysis; Modulation coding; Niobium; OFDM; Resource management; State feedback; Transmitters; Ultra wideband technology; channel state information; compression schemes; feedback channel; spectral correlation; temporal correlation;
Conference_Titel :
Ultra-Wideband, 2009. ICUWB 2009. IEEE International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4244-2930-1
Electronic_ISBN :
978-1-4244-2931-8
DOI :
10.1109/ICUWB.2009.5288745
