Aspects of Rate and Power Loading in (Coded-)OFDM
نویسنده
چکیده
Several rate and power allocation strategies for (coded) OFDM are studied. We employ an equivalent channel model known from the context of bit-interleaved coded modulation to represent the the frequency-domain channel model by a set of independent parallel binary input channels. The impact of rate and power loading on the capacities of these subchannels is numerically analyzed and conclusions for the resulting bit-error ratios are drawn for both, coded and uncoded transmission. The so-called parallel decoding capacity is identified as an appropriate optimization criterion for coded transmission.
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تاریخ انتشار 2008