Pilot Assignment based on AoA Information using Channel Charting in Massive MIMO Systems

Bushra Shaikh, Pere Garau Burguera, Hanan Al-Tous, Markku J. Juntti, Muhammad Bilal Khan, Olav Tirkkonen

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference article in proceedingsScientificvertaisarvioitu

120 Lataukset (Pure)

Abstrakti

We consider a multi-point channel charting (CC)
based uplink pilot allocation algorithm for a multi-cell network.
We create the channel chart on an offline phase and map
the base station (BS) locations to charting locations. The chart
provides an approximation of the geometry of the network, with
imprecise but indicative distances and directions. Accordingly we
model the angle of arrival (AoA) of the signal arriving at the
BS from a user equipment (UE) on the CC by a probability
distribution. We make use of AoA distributions on the CC
to construct similarity weights between users; users nearby in
the angular domain have large similarity, whereas more distant
users have smaller similarity values. The points of view of
all BSs are considered to create a global similarity matrix. A
constrained weighted graph colouring algorithm is then applied
to allocate pilots. Simulation results show that the proposed pilot
allocation algorithm outperforms state of the art CC-based pilot
allocation algorithms. The performance of the CC-angle based
pilot allocation scheme is comparable to that obtained by using
known physical locations and angle spread information.
AlkuperäiskieliEnglanti
Otsikko2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2024
KustantajaIEEE
Sivut166-170
Sivumäärä5
ISBN (elektroninen)979-8-3503-9318-7
DOI - pysyväislinkit
TilaJulkaistu - 2024
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaIEEE International Workshop on Signal Processing Advances in Wireless Communications - Lucca, Italia
Kesto: 10 syysk. 202413 syysk. 2024

Julkaisusarja

NimiSPAWC
ISSN (elektroninen)1948-3252

Conference

ConferenceIEEE International Workshop on Signal Processing Advances in Wireless Communications
Maa/AlueItalia
KaupunkiLucca
Ajanjakso10/09/202413/09/2024

Sormenjälki

Sukella tutkimusaiheisiin 'Pilot Assignment based on AoA Information using Channel Charting in Massive MIMO Systems'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

Siteeraa tätä