Title | ||
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Joint blind channel shortening and compensation of transmitter I/Q imbalances and CFOs for uplink SC-IFDMA systems. |
Abstract | ||
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This paper deals with receiver design for the uplink of a single-carrier interleaved frequency-division multiple-access (SC-IFDMA) system, which is a promising candidate for non-adaptive transmission in next-generation wireless systems. In particular, channel shortening is required in asynchronous SC-IFDMA systems operating over highly-dispersive channels, since the length of the cyclic prefix (CP) is insufficient to compensate for the combined effects of timing offsets and channel dispersion; other major sources of performance degradation are the in-phase/quadrature-phase (I/Q) imbalance introduced at each transmitter, and the carrier frequency offsets (CFOs) between the transmitters and the receiver. The proposed multistage receiver is designed to jointly counteract all these impairments: specifically, the minimum mean-output energy (MMOE) criterion is adopted to synthesize a time-domain equalizer, which performs blind multiuser channel shortening of all the user channels (including the corresponding time offsets), without requiring a priori knowledge of the channel impulse responses to be shortened, or compensation of the CFOs and transmitter I/Q imbalances. Moreover, after channel shortening and (total or partial) CP removal, the MMOE criterion is also employed to compensate for the CFOs and mitigate I/Q impairments. Monte Carlo computer simulations are carried out to assess the effectiveness of the proposed receiver. |
Year | DOI | Venue |
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2014 | 10.1016/j.phycom.2013.10.004 | Physical Communication |
Keywords | Field | DocType |
Blind channel shortening,Carrier frequency offset (CFO),In-phase/quadrature-phase (I/Q) imbalance,Single-carrier interleaved frequency-division multiple-access (SC-IFDMA) | Asynchronous communication,Transmitter,Monte Carlo method,Cyclic prefix,Computer science,A priori and a posteriori,Communication channel,Real-time computing,Impulse (physics),Telecommunications link | Journal |
Volume | ISSN | Citations |
11 | 1874-4907 | 6 |
PageRank | References | Authors |
0.46 | 29 | 3 |
Name | Order | Citations | PageRank |
---|---|---|---|
Donatella Darsena | 1 | 182 | 17.78 |
Giacinto Gelli | 2 | 211 | 22.46 |
Francesco Verde | 3 | 254 | 24.42 |