Some common forms of QAM are 16-QAM
, 32-QAM, 64-QAM, 128-QAM, and 256-QAM.
The average number of iterations for binary LTE Turbo codes with 16-QAM
and SDR stopping is shown in Figure 12.
Vector Millimeter Wave Signal Generation Based on Phase Modulator with Photonic Frequency Doubling and Precoding.
Since the amplitude of each pixel is in the range of 0 - 255 therefore both R(i) and Q(i) has the value in the range of 0 - 15 hence we can use the values as the constellation points of 16-QAM
"By eliminating the need to use two wavelengths with the 16-QAM
modulation format, Oclaro's new modulator will enable customers to accelerate the design and test of next-generation, high-speed 400-Gb/s networks," said Adam Carter, chief commercial officer at Oclaro.
The first rate uses QPSK with rate 3/4 coding, while at 24 Mbps, 16-QAM
with rate 1/2 coding is used.
SNR performance estimation method, is detailed in the case of 16-QAM
This number comes from the widely used IEEE 802.11g standard , especially from the 16-QAM
modulation with coding rate 1/2 (bitrate 24 Mbps).
Las modulaciones establecidas para enlaces de bajada y subida son BPSK, QPSK, 16-QAM
y 64QAM; sus constelaciones se muestran en la figura 6 (Jose Andres Marzo Icaza, 2011).
Recently, three wireless 16-QAM
MIMO signals were proposed to be transmitted over a 20 km SMF using the optical single-sideband frequency translation (OSSB-FT) technique (which is considered as OFU technique) .
In the simulations, we considered QPSK and 16-QAM
and the 64-QAM signals with different frequency bandwidths are sent at a carrier frequency of 2.0 GHz to both the SPR and the low-IF receivers.