Name
Title | ||
|---|---|---|
Full-Duplex Relaying In Mimo-Ofdm Frequency-Selective Channels With Optimal Adaptive Filtering |
Abstract | ||
|---|---|---|
In-band full-duplex transmission allows a relay station to theoretically double its spectral efficiency by simultaneously receiving and transmitting in the same frequency band, when compared to the traditional half-duplex or out-of-band full-duplex counterpart. Consequently, the induced self-interference suffered by the relay may reach considerable power levels, which decreases the signal-to-interference-plus-noise ratio (SINR) in a decode-and-forward (DF) relay, leading to a degradation of the relay performance. This paper presents a technique to cope with the problem of self-interference in broadband multiple-input multiple-output (MIMO) relays. The proposed method uses a time-domain cancellation in a DF relay, where a replica of the interfering signal is created with the help of a recursive least squares (RLS) algorithm that estimates the interference frequency-selective channel. Its convergence mean time is shown to be negligible by simulation results, when compared to the length of a typical orthogonal-frequency division multiplexing (OFDM) sequences. Moreover, the bit-error-rate (BER) and the SINR in a OFDM transmission are evaluated, confirming that the proposed method extends significantly the range of self-interference power to which the relay is resilient to, when compared with other mitigation schemes. |
Year | Venue | Keywords |
|---|---|---|
2015 | 2015 IEEE GLOBAL CONFERENCE ON SIGNAL AND INFORMATION PROCESSING (GLOBALSIP) | Decode-and-forward relay, in-band full-duplex, frequency-selective MIMO channel, adaptive filtering, recursive least squares |
Field | DocType | Citations |
MIMO-OFDM,Relay channel,Mathematical optimization,Control theory,MIMO,Electronic engineering,Spectral efficiency,Mathematics,Recursive least squares filter,Orthogonal frequency-division multiplexing,Relay,Duplex (telecommunications) | Conference | 1 |
PageRank | References | Authors |
0.36 | 10 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| João S. Lemos | 1 | 7 | 1.53 |
| Francisco A. Monteiro | 2 | 20 | 3.28 |
| Ivo Sousa | 3 | 21 | 5.66 |
| A. Rodrigues | 4 | 41 | 14.77 |