Abstract
OFDM modulation combines the advantages of high achievable rates and relatively easy implementation. However, for proper recovery of the input, the OFDM receiver needs accurate channel information. Most algorithms proposed in literature perform channel estimation in the time domain which increases the computational complexity in multiaccess situations where the user is only interested in part of the spectrum. In this paper, we propose a frequency domain algorithm for channel estimation in OFDM. The algorithm performs eigenvalue decomposition of the channel autocorrelation matrix and approximates the channel frequency response seen by each user by the first few dominant eigenvectors. This reduces the parameter estimation space and allows estimation using a few number of pilots1.
Original language | English (US) |
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Title of host publication | ICSPC 2007 Proceedings - 2007 IEEE International Conference on Signal Processing and Communications |
Pages | 1047-1050 |
Number of pages | 4 |
DOIs | |
State | Published - 2007 |
Externally published | Yes |
Event | 2007 IEEE International Conference on Signal Processing and Communications, ICSPC 2007 - Dubai, United Arab Emirates Duration: Nov 14 2007 → Nov 27 2007 |
Other
Other | 2007 IEEE International Conference on Signal Processing and Communications, ICSPC 2007 |
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Country/Territory | United Arab Emirates |
City | Dubai |
Period | 11/14/07 → 11/27/07 |
Keywords
- Channel estimation
- Frequency domain estimation
- OFDM
- Parameter reduction
ASJC Scopus subject areas
- Computer Networks and Communications
- Signal Processing
- Communication