Benchmark_ofdm_tx Benchmark_ofdm_rx

GNU Radio
1

Hi,

i’ve a question about these two functions.
My aim is to modify these benchmarks in order to create a trasmission
system that can choose to put on a single carrier a BPSK or a QPSK
modulation. My problem is this one, how can i comunicate to the receiver
what carriers are BPSk adn what QPSK?

Thanks a lot

2

On Tue, Jul 01, 2008 at 11:37:22AM +0200, matteo zunino wrote:

Hi,

i’ve a question about these two functions. My aim is to modify these
benchmarks in order to create a trasmission system that can choose
to put on a single carrier a BPSK or a QPSK modulation. My problem
is this one, how can i comunicate to the receiver what carriers are
BPSk adn what QPSK?

Thanks a lot

This is typically done by sending some kind of “map” at the low rate
at the beginning of packet. Take a look at WiMAX to see how
complicated this can get :wink:

Eric