Resource allocation method for downlink transmission in a multicarrier-based CDMA communication system
A technology of resource allocation and communication system, applied in the field of wireless communication system, can solve the problem of providing detailed and effective implementation methods without management of wireless resources, etc.
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[0031] Now, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0032] FIG. 1 is a block diagram showing an Orthogonal Frequency Division Multiplexing Code Division Multiple Access (OFDM-CDMA) system to which a resource allocation method according to a preferred embodiment of the present invention is applied.
[0033] As shown in Figure 1, the OFDM-CDMA system includes: a transmitter comprising a serial / parallel (S / P) converter 11, an expander 12, an adder 13, an OFDM modulating unit 15; and comprising an OFDM demodulating unit 17 and a parallel / serial converter 19 receiver. Each S / P converter 11 performs serial / parallel conversion of each user's input information. Each spreader 12 multiplies each S / P converted signal output from the S / P converter 11 by a spreading code corresponding to the user. Each adder 13 adds the spread signals of different users output from the spreader 12 . The OFDM modulation un...
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