Table 13 Summary of synchronization research in OFDMA uplink communication systems
Article | Fading | CSI Req. | CE | Blind/Pilot | Est/Comp | TO/CFO | Bound | Comments |
|---|---|---|---|---|---|---|---|---|
[263] | Freq. sel. | Yes | No | Pilot | Both | CFO | No | MIMO, Rao-Blackwellized particle filter |
[264] | Freq. sel. | Yes | No | Pilot | Both | CFO | No | CFO tracking |
[265] | Freq. sel. | Yes | No | Pilot | Est | CFO | No | Canonical particle swarm optimization scheme |
[266] | Freq. sel. | Yes | No | Pilot | Est | CFO | Yes | Alternating projection method |
[267] | Freq. sel. | Yes | No | Blind | Est | CFO | Yes | Interleaved OFDMA |
[268] | Freq. sel. | Yes | No | Blind | Both | CFO | No | Tile-based OFDMA |
[269] | Freq. sel. | Yes | Yes | Blind | Est | CFO | No | Interleaved OFDMA |
[270] | Freq. sel. | Yes | No | Pilot | Both | CFO | Yes | Conjugate gradient method |
[271] | Freq. sel. | Yes | No | Pilot | Est | CFO | Yes | Interleaved OFDMA |
[272] | Freq. sel. | Yes | No | Pilot | Both | CFO | No | Multiuser interference cancelation-based algorithm |
[273] | Freq. sel. | Yes | No | Blind | Est | CFO | No | LS estimation |
[425] | Freq. sel. | Yes | No | Pilot | Est | CFO | Yes | SFO estimation |
[426] | Freq. sel. | Yes | No | Blind | Est | CFO | Yes | Precoded OFDMA |
[427] | Freq. sel. | Yes | No | Pilot | Both | CFO | No | OFDM and FBMC |
[253] | Freq. sel. | Yes | No | N/A | Comp | CFO | N/A | Channel allocation, SC-FDMA |
[429] | Freq. sel. | Yes | Yes | Pilot | Est | CFO | Yes | Iterative ML est |
[430] | Freq. sel. | Yes | No | Pilot | Est | CFO | No | Ranging method |
[274] | Freq. sel. | Yes | No | Pilot | Est | CFO | Yes | Tile-based OFDMA |
[275] | Freq. sel. | Yes | Yes | Pilot | Both | CFO | Yes | Doubly selective channel |
[276] | Freq. sel. | Yes | No | Pilot | Est | CFO | Yes | Conjugate gradient method |
[277] | Freq. sel. | Yes | No | N/A | Comp | CFO | N/A | Interleaved OFDMA |
[278] | Freq. sel. | Yes | No | N/A | Comp | CFO | N/A | Multistage interference cancelation |
[279] | Freq. sel. | Yes | No | N/A | Comp | CFO | N/A | Successive interference cancelation |
[280] | Freq. sel. | Yes | Yes | Pilot | Est | CFO | No | Partial FFT modulation |
[281] | Freq. sel. | Yes | No | N/A | Comp | CFO | N/A | Subcarrier allocation algorithm |
[282] | Freq. sel. | Yes | No | Pilot | Est | CFO | Yes | MIMO OFDMA, Bayesian estimation |
[283] | Freq. sel. | Yes | Yes | Pilot | Both | CFO | No | High mobility |
[284] | Freq. sel. | Yes | Yes | Pilot | Both | CFO | No | Common CFO estimation |
[285] | Freq. sel. | Yes | Yes | Blind | Est | CFO | No | Interleaved OFDMA, DoA estimation |
[286] | Freq. sel. | Yes | No | N/A | Comp | CFO | N/A | Exploit time domain inverse matrix |
[287] | Freq. sel. | Yes | No | Pilot | Both | CFO | No | Ad hoc network |
[288] | Freq. sel. | Yes | No | N/A | Comp | CFO | N/A | Soft interference cancelation |
[289] | Freq. sel. | Yes | No | N/A | Comp | CFO | N/A | LS and MMSE-based compensation |
[290] | Freq. sel. | Yes | Yes | Pilot | Both | CFO | Yes | Low complexity estimation |
[292] | Freq. sel. | Yes | Yes | Pilot | Both | Both | No | OFDMA spectrum sharing system |
[291] | Freq. sel. | Yes | Yes | Pilot | Both | TO | Yes | Ranging sheme |