How to generate 1000 bit with QPSK

How can I generate 1000 bit +1 and -1 equiprobably then msp into QPSK symbol? Which 1 QPSK symbol brings 2 bit. What should I do? Thank you...

Answer 1

[Ved]

To generate equiprobable 0s and 1s,use either one:

 rand(1,1000)>.5 % generate almost equiprobable 1x1000 logical array of 0s & 1s

 randi([0 1],1,1000) % 1x1000 double array of almost equiprobable 0s & 1s

and to map data to 4-ary PSK,either use "pskmod" or "comm.PSKModulator"

Type this into command window to get more insight.

 help pskmod % its an obsolete function
 help comm.PSKModulator % new function