Component-interleaved Alamouti coding with rotated constellations for signal space diversity

Alamouti space–time block coded hierarchical modulation with signal space diversity and MRC reception in Nakagami‐ m fading channel

“…In [18], the NN BER union bound for hierarchical 16-QAM with SSD and maximal ratio combining (MRC) reception has been derived and its accuracy validated. This section uses the NN union bound approach presented in [8,10] in order to extend the results in [18] to determine an accurate approximation of the BER for Alamouti transmitted hierarchical 16-QAM with SSD and MRC reception.…”

“…First, probability of error because of perpendicular neighbours is considered. The probability density function for the combined SNR in the presence of MRC in a Nakagami fading channel is given in (10) for N receive antennas [19].…”

“…Among various error analysis methods for rotated constellations with component interleaving [10,11], the nearest neighbourhood (NN) approximation analysis in [8,10] is extended to Alamouti transmit diversity (ATD) for HM QAM with SSD to attain a closed-form theoretical bit-error-rate (BER) expression in Nakagami fading channels. This method of error analysis for HM proves not only to be an accurate approximation for BER but reduces computational complexity from the previous approaches [12,13], which consider the probability of each symbol succumbing to error for each bit position.…”

Performance analysis of maximal ratio combining with transmit antenna selection and signal space diversity under exponential antenna correlation

“…SSD has been extensively investigated for single‐input single‐output systems [11–16]. SSD has also been combined with MIMO systems in more recent works [17–29]. In [17], Alamouti space‐time coding technique has been used with component interleaving and rotated signal constellations to increase the error performance further.…”

“…SSD has also been combined with MIMO systems in more recent works [17–29]. In [17], Alamouti space‐time coding technique has been used with component interleaving and rotated signal constellations to increase the error performance further. SSD has been incorporated with vertical Bell Labs layered space‐time (V‐BLAST) algorithm in [18] to increase the diversity order of the original V‐BLAST technique.…”