A wireless High-Definition camera, which is called "a millimeter-wave mobile camera", is being developed for TV program production. In this development, High-Definition TV picture transmission with high quality, low latency and high link reliability is required, so examined is an application of MIMO-OFDM transmission scheme and Millimeter-wave for the camera. In this paper, for the purpose of making the camera used for TV program production in Line-of-Sight environment, vertical and horizontal polarized omni-directional antennas were developed and the outdoor transmission performance of the wireless camera using orthogonal polarized wave was measured. In conclusion, it was confirmed that MIMO channel correlation was reduced and the BER performance got better than before.