I
I Budiarjo
Authored
20 records found
Channel State Information is crucail in applying adaptive bit loading to OFDM system. The number of bits allocated to each subcarrier is determined by the quantity of the channel state estimate and the noise variance estimate. In this paper performance of several adaptive bit loa
...
This paper presents the combination of adaptive bit loading and spectrum pooling to be applied in a Cognitive Radio system. Adaptive bit loading is a method to adapt the constellation size of the transmitted signal according to the channel variations by exclusion of heavily faded
...
Cognitieve Radio is a revolutionaary tehcnolgoy which provides efficient use of spectrum. OFDM is a proper technique for the cognitieve radio. In this paper, we present an overview of adaptive OFDM techniques in the context of cognitive radio. Major adaptive OFDM schemes for cogn
...
This paper presents the performance comparison of cognitive radio TDCS and OFDM based for MIMO system using VBLAST receiver architecture to reconstruct the transmitted data. The interference avoidance performance in terms of BER and bitrate are improved by adding multiple antenna
...