Name
Abstract | ||
|---|---|---|
In multihop OFDM relay systems the end-to-end average capacity can be increased by incorporating subcarrier mapping (SCM) at the relay nodes. In this paper, we propose an exact analytical technique of evaluating the average capacity of a dual-hop OFDM relay system with SCM in a Rayleigh fading channel. Closed-form expressions are derived for the probability density function of the end-to-end SNR of mapped subcarrier pairs. Comparison with simulation results confirms the accuracy of the proposed analytical technique. Also, the results show that an average capacity increase of the order of 10%-30% can be achieved using SCM in the low SNR regime. Moreover, the achievable percentage capacity increase with SCM is more when the average transmit power of the relay is less than that of the source. |
Year | DOI | Venue |
|---|---|---|
2008 | 10.1109/ICC.2008.829 | 2008 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, PROCEEDINGS, VOLS 1-13 |
Keywords | Field | DocType |
fading,decoding,ofdm modulation,probability,wireless communication,paired comparison,probability density function,spread spectrum communication,ofdm,closed form solution | Subcarrier,Transmitter power output,Rayleigh fading,Fading,Computer science,Computer network,Decoding methods,Relay,Orthogonal frequency-division multiplexing,Spread spectrum | Conference |
ISSN | Citations | PageRank |
1550-3607 | 20 | 1.02 |
References | Authors | |
7 | 3 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Chandranath R. N. Athaudage | 1 | 83 | 7.99 |
| Masato Saito | 2 | 32 | 4.02 |
| Jamie Evans | 3 | 95 | 9.49 |