Table 1 Simulation parameters
From: Performance of opportunistic fixed-beam spatial multiplexing in OFDMA uplink
Parameter | Value |
|---|---|
MIMO mode | 2 × 2 spatial multiplexing |
MIMO receiver algorithm | LMMSE |
Carrier frequency | 2 GHz |
Bandwidth | 5 MHz |
Multiple access scheme | OFDMA |
Frame length | 24 OFDMA symbols |
OFDMA symbol duration | 102.8 μs |
Frame duration | 3.1 ms |
Modulation | 64 QAM |
Coding | Convolutional turbo coding, rate 1/2 |
Number of OFDMA subcarriers | 512 |
Number of data subcarriers | 360 |
Number of pilot subcarriers | 60 |
Resource blocks per OFDMA symbol | 24 |
Data subcarriers per RB | 15 |
RB size | 24 × 15 subcarriers |
Cyclic prefix length | 1/32 of OFDMA symbol length |
Pilot boosting for MIMO | 5.8 dB |
Channel estimation scheme | Least squares |
Mobile velocity | 33.3 m/s |