Performance of adaptive MC-CDMA in HiperLAN/2++

Lestable, Thierry; Husson, L.; Antoine, J.; Wautier, A.

doi:10.1109/vetecf.2002.1040772

Cited by 7 publications

(2 citation statements)

References 8 publications

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“…In [17], an analysis of the BER performance is determined for MC-CDMA as the frequency domain spreading factor is varied. The results indicate that if MAI is neglected, the BER performance improves as the spreading factor is increased.…”

Section: 1 a D A P T Iv E M C -C D M Amentioning

confidence: 99%

Adaptive Subcarrier Allocation for Orthogonal Frequency Code Division Multiplexing (OFCDM)

Caldwell¹

2021

Preprint

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In this thesis, a novel adaptive subcarrier allocation algorithm is developed for OFCDM. This algorithm utilizes groups of evenly spaced, non-contiguous subcarriers throughout the spectrum. The users are allocated to subcarriers groups with the intention of minimizing the overall BER. This is accomplished by assigning a user to the set of subcarriers that provides the best Signal to Interfenence and Noise Ratio (SINR), while producing the least amount of interference to other users accessing the same subcarrier group. The expected interference produced by this user is then utilized to recalculate the SINR for the subcarrier goup, and the allocation process continues recursively until all users are assigned to subcarriers. The proposed alogrithm is shown to provide a performance improvement ranging from 1.5dB with 2x16 spreading, 7dB with 16x2 spreading. The algorithm is also shown to maintain or improve the BER floor for each OFCDM spreading configuration.

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Section: 1 a D A P T Iv E M C -C D M Amentioning

confidence: 99%

Adaptive Subcarrier Allocation for Orthogonal Frequency Code Division Multiplexing (OFCDM)

Caldwell¹

2021

Preprint

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“…Some important ones are presented in [1], [2], [3], [4], [5], [6], [7], [8], [9]. Future generation wireless networks are expected to use optimal access scheme for each environment.…”

Section: Introductionmentioning

confidence: 99%

On Performance of SCH-OFDMA-CDM in Frequency Selective Indoor Environment

Das

Rahman

Fitzek

et al.

2005 IEEE 61st Vehicular Technology Conference

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Abstract-Performance of sub carrier hopped orthogonal frequency division multiple access code division multiplexing (SCH-OFDMA-CDM) is analyzed and compared against its non hopping counterpart (OFDMA-CDM) in frequency selective indoor environment. The system model is developed and simulation results for realistic scenarios are presented. These provide guidelines for configuring the system and also indicate the suitability of this scheme for indoor down link over other multi carrier spread spectrum schemes. The outage throughput of SCH-OFDMA-CDM is shown to improve over non hopping OFDMA-CDM scheme in indoor down link for some configurations. The mean throughput of the both schemes are found to be same for both schemes. Effect of block and interleaved sub carrier assignment and the performance of a successive interference cancelation scheme were also verified.

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