In this paper, a multilevel transmit power allocation (MTPA) for orthogonal frequency-code
division multiplexing (OFCDM) based adaptive modulation system with antenna array is …

This paper proposes a multilevel transmit power control (MTPC) for OFDM based adaptive
modulation systems (OFDM AMS) to achieve high bit rate transmission services without …

An adaptive transmission scheme using QAM and LDPC code is proposed for an OFDMA
cellular system employing FDD. Also, adaptive algorithms for active user selection …

This paper proposes an OFDM based adaptive modulation scheme employing variable
coding rate (VCR OFDM AMS), which selects optimum modulation and coding scheme …

In this paper, we introduce variable coding rate (VCR) control to OFDM adaptive modulation
scheme (OFDM AMS) in order to realize high throughput with relatively simple transceiver …

Orthogonal frequency division multiplexing (OFDM), which employs orthogonal overlapping
sub-carriers to modulate the signals, has attracted much attention in recent time as a …

Abstract Orthogonal Frequency Division Multiplexing (OFDM), which employs orthogonal
overlapping subcarriers to modulate the signals, has been attracted much attention in recent …

Orthogonal frequency and code division multiplexing (OFCDM) is a promising emerging
technique for the fourth generation cellular system. In this paper, we propose an adaptive …

In the OFDM (orthogonal frequency division multiplexing) adaptive modulation system, the
method of modulation of each subcarrier is adaptively controlled. It is a useful system for …

In this paper, we present an adaptive modulation technique for orthogonal frequency
division multiplexing (OFDM) and enhance the performance of adaptive OFDM using a …