warp_transmit_mimo.rar_RFA_warp_warp mimo

%% warp transmit function [rx_vec_air_A,rx_vec_air_B,rx_RSSI,rx_gains] = warp_transmit(tx_vec_air_A,tx_vec_air_B,TxGainRF,TxGainBB,RxGainRF,RxGainBB,fc,channel) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % Set up the WARPLab experiment % Prepare for Transmit Using WARP %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% USE_AGC = false; NUMNODES = 2; %Create a vector of node objects nodes = wl_initNodes(NUMNODES); %Create a UDP broadcast trigger and tell each node to be ready for it eth_trig = wl_trigger_eth_udp_broadcast; wl_triggerManagerCmd(nodes,'add_ethernet_trigger',[eth_trig]); %Get IDs for the interfaces on the boards. Since this example assumes each %board has the same interface capabilities, we only need to get the IDs %from one of the boards [RFA,RFB] = wl_getInterfaceIDs(nodes(1)); %Set up the interface for the experiment wl_interfaceCmd(nodes,'RF_ALL','tx_gains',TxGainBB,TxGainRF); wl_interfaceCmd(nodes,'RF_ALL','channel',fc,channel); if(USE_AGC) wl_interfaceCmd(nodes,'RF_ALL','rx_gain_mode','automatic'); wl_basebandCmd(nodes,'agc_target',-10); wl_basebandCmd(nodes,'agc_trig_delay', 511); else wl_interfaceCmd(nodes,'RF_ALL','rx_gain_mode','manual'); RxGainRF = 2; % Rx RF Gain in [1:3] RxGainBB = 12; % Rx Baseband Gain in [0:31] wl_interfaceCmd(nodes,'RF_ALL','rx_gains',RxGainRF,RxGainBB); end % use the transmitter's I/Q buffer size to determine how long our % transmission can be TX_NUM_SAMPS = nodes(1).baseband.txIQLen; % 16384 SAMP_FREQ = wl_basebandCmd(nodes(1),'tx_buff_clk_freq'); % 40 MHz node_tx = nodes(1); node_rx = nodes(2); %Set up the baseband for the experiment wl_basebandCmd(nodes,'tx_delay',0); wl_basebandCmd(nodes,'tx_length',TX_NUM_SAMPS); %Write the Tx waveform to the Tx node wl_basebandCmd(node_tx,[RFA RFB], 'write_IQ', [tx_vec_air_A(:) ,tx_vec_air_B(:)]); %Enable the Tx and Rx radios wl_interfaceCmd(node_tx,[RFA+RFB],'tx_en'); wl_interfaceCmd(node_rx,[RFA+RFB],'rx_en'); %Enable the Tx and Rx buffers wl_basebandCmd(node_tx,[RFA+RFB],'tx_buff_en'); wl_basebandCmd(node_rx,[RFA+RFB],'rx_buff_en'); %Trigger the Tx/Rx cycle at both nodes eth_trig.send(); %Retrieve the received waveform from the Rx node rx_vec_air_A = wl_basebandCmd(node_rx,[RFA],'read_IQ', 0, TX_NUM_SAMPS); rx_vec_air_A = rx_vec_air_A(:).'; rx_vec_air_B = wl_basebandCmd(node_rx,[RFB],'read_IQ', 0, TX_NUM_SAMPS); rx_vec_air_B = rx_vec_air_B(:).'; %Disable the Tx/Rx radios and buffers wl_basebandCmd(nodes,RFA+RFB,'tx_rx_buff_dis'); wl_interfaceCmd(nodes,RFA+RFB,'tx_rx_dis'); end