2010 - VII International Telecommunications Symposium
System-Level Analysis of Outer Loop Link Adaptation on Mobile WiMAX Systems
Link adaptation is a process of paramount importance to optimize the performance of wireless communication systems. However, standardization committees have ...
- Andre M. Cavalcante
- Juliano J. Bazzo
- Edgar B. Souza
- Marco J. de Sousa
- Lauri Kuru
- Jani Moilanen
- Link adaptation
- WiMAX 802.16e
- system-level analysis
SBrT 2010
Synchronization of Legacy 802.11a/g Devices Operating in IEEE 802.11n Networks
It is investigated the performance of legacy IEEE 802.11a time synchronization algorithms when the synchronization preamble is transmitted by IEEE 802.11n ...
- Roger Pierre Fabris Hoefel
- André Michielin Câmara
- 802.11n
- 802.11a/g
- synchronization
SBrT 2010
Performance Analysis of HARQ in WiMAX Networks Considering Imperfect Channel Estimation
Hybrid Automatic Repeat Query (HARQ) is an error correction technique that has become an integral part of most current broadband wireless standards such a...
- Ricardo V. Dias
- João P. Leite
- Rafhael M. Amorim
- André N. Barreto
- Paulo Henrique P. de Carvalho
- Robson D. Vieira
- channel estimation
- HARQ
- incremental redundancy
- WiMAX
SBrT 2010
On the Impact of Non-Linear High Power Amplifiers on Coded OFDM
The high peak-to-average power ratio (PAPR) is one of the main disadvantages of OFDM systems, which reduces the transmission efficiency with non-linear pow...
- Ian Alves Ulian
- André Noll Barreto
- OFDM
- PAPR
- non-linear power amplifier
- total degradation
- channel coding
SBrT 2010
Controlling the Peak-to-Average Power Ratio in the Downlink of WiMAX Systems
It is well known that one of the main implementation issues in multicarrier modulation schemes, like OFDM, is their high peak-to-average power ratio (PAPR)....
- Guilherme Guimares Mendes
- Andr Noll Barreto
- WiMAX
- PAPR
- PAPR reduction schemes
- non linear amplifiers
SBrT 2010