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Unformatted text preview: to Figure 11 is a very interesting problem. All the realworld algorithms surveyed in the following subsection try to solve this problem by using different flavors of the RA approach. 4.1.3.1 Survey Of Rate Adaptive Resource Allocation Algorithms In [34], Yin and Liu’s algorithm performs OFDMA resource allocation for a system like the one shown in Figure 11 in two steps. The first step (shown in Figure 19) determines the number of subcarriers to be assigned to each user and the amount of power to be allocated to each subcarrier. The second step uses the Hungarian method [35] to make subcarrier assignments and loads bits onto each subcarrier. In the first step, the idea is to gradually increase the number of subcarriers assigned to each user. In Box (1) of Figure 19, each user m is assigned a single carrier to begin with. After the first...
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This note was uploaded on 09/27/2009 for the course ECE 399 taught by Professor Prof during the Spring '09 term at University of Texas.
 Spring '09
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