A power optimized space-time code is presented for reliable delivery of layer coded multimedia, data through wireless channels. Appropriate power control further improves the performance of space time coding. By allocating transmitted power according to the layer perceptual importance, unequal error protection is achieved. Numerical example shows that the proposed algorithm achieves 6 dB PSNR improvement compared to that with equal power distribution in low SNR range.
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机译：提出了一种功率优化的时空代码，用于通过无线通道可靠地传输层编码的多媒体数据。适当的功率控制进一步提高了时空编码的性能。通过根据层的感知重要性分配发射功率，可以实现不平等的错误保护。数值算例表明，与在低SNR范围内具有相等功率分布的算法相比，该算法可实现6 dB PSNR的改善。
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