optimal bit allocation

基本解釋

It provides optimal dynamic bit allocation for sub-bands of DWT and realizes adaptive quantization for wavelet coefficients. At last, it provides exact rate control for the coder.
該方法基于率失真曲線的精確理論模型，對小波分解后的不同子帶提供最優(yōu)的動態(tài)比特分配從而實現(xiàn)了小波系數(shù)的自適應量化編碼，最后還實現(xiàn)了碼率控制。
Simulation results show that the proposed algorithm is an optimal algorithm and it can clearly improve system performance compared with the traditional equal bit allocation algorithm.
仿真結果表明，該算法是一種最優(yōu)的比特和功率分配算法。與傳統(tǒng)的等比特分配方案相比，該算法能夠顯著提高系統(tǒng)的性能。
Based on the characteristic of multi-path frequency selective channel, the algorithm combines rapid table lookup and Lagrange-multiplier method to iteratively search the optimal bit allocation scheme.
算法根據(jù)多徑信道選擇性衰落的特性，結合查表法和拉格朗日乘子的混合迭代搜索法，最優(yōu)地分配各個子載波的傳輸比特數(shù)。